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Pesticide Surrogate Mix (2 components)

...Pesticide Surrogate Mix...

TCLP Pesticide Mix (5 components)

...TCLP Pesticide Mix...

Pesticide Surrogate Mix (2 components)

...Pesticide Surrogate Mix...

Phenylurea Pesticide Mixture (8 components)

...Phenylurea Pesticide Mixture...

Organochlorine Pesticide Mix C #1 (6 components)

...Organochlorine Pesticide Mix C #1...

Pesticides Mix #2, Method 527 (5 components)

...Pesticides Mix #2, Method 527...

Pesticide Surrogate Mix, EPA 8080, 8081 (2 components)

...Pesticide Surrogate Mix, EPA 8080, 8081...

Minnesota Ag List 1 Pesticides Mix B (6 components)

...Minnesota Ag List 1 Pesticides Mix B...

LC Multiresidue Pesticide Standard #7 (7 components)

Organonitrogen Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #7 ... Ampul 7 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

LC Multiresidue Pesticide Standard #9 (7 components)

Carbamate/Uron Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #9 ... Ampul 9 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

LC Multiresidue Pesticide Standard #8 (Hydramethylnon)

Organonitrogen Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #8 ... Ampul 8 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

LC Multiresidue Pesticide Standard #10 (Carbendazim)

Carbamate/Uron Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #10 ... Ampul 10 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

Labeled Pesticide Residue Internal Standards for Food Analysis

...Labeled Pesticide Residue Internal Standards for Food Analysis ... Isotopically labeled to provide the best approach for pesticide residue -class food safety analysis: pesticide reference standard mixes and internal/surrogate standards, GC and LC...

GC Multiresidue Pesticide Standard #9 (8 components)

Organophosphorus Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #9 ... Ampul 9 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

Oregon Pesticide Standards (6 separate mixes)

...Each ampul sold separately.Cat.# 32586: Oregon Pesticide Standard #1 (6 components Pesticide Standard #2 (14 components)Acetamiprid (135410-20-7)Azoxystrobin (131860 ... Oregon Cannabis Pesticide Standards meet the specific cannabis pesticide residue analysis needs of Oregon – and states with similar pesticide residue regulations/programs. Dissolved in acetonitrile ... Oregon Pesticide Standards ... Meet specific cannabis pesticide residue analysis needs of Oregon – and states with similar pesticide residue regulations/programs. Verified composition and stability...

Pesticide Residue Cleanup SPE Cartridges

...Pesticide Residue Cleanup SPE Cartridges ... in multiresidue pesticide analysis to remove matrix interferences. Excellent for cleanup of dietary...

8141 OP Pesticide Calibration Mix B (7 components)

..., pH, heat, and water. Restek has overcome these issues through our ongoing research into OP pesticide ... 8141 OP Pesticide Calibration Mix B...

Minnesota Ag List 1 Pesticide Kit

...32406: Minnesota Ag List 1 Pesticides Mix AAcetochlor (34256-82-1)Alachlor List 1 Pesticides Mix BChlorpyrifos (2921-88-2)EPTC (759-94-4)Fonofos (944 ... Minnesota Ag List 1 Pesticide Kit ... Contains 1 mL each of these mixtures.32406: Minnesota Ag List Pesticides Mix A32407 : Minnesota Ag List Pesticides Mix B...

LC Multiresidue Pesticide Standard #1 (13 components)

Organophosphorus Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #1 ... Ampul 1 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

LC Multiresidue Pesticide Standard #2 (16 components)

Carbamate/Uron Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #2 ... Ampul 2 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

LC Multiresidue Pesticide Standard #5 (30 components)

Organonitrogen Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #5 ... Ampul 5 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

LC Multiresidue Pesticide Standard #6 (28 components)

Organonitrogen Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #6 ... Ampul 6 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

Cleaned Polyurethane Foam (PUF) Cartridges

... and organophosphorus pesticides, carbamate, pyrethrin, triazine, and urea pesticides —Organochlorine and organophosphorus pesticides, carbamate, pyrethrin, triazine, and urea pesticides ... Use for collection of semivolatiles (pesticides, PCBs, PAHs). Both large...

Raw Polyurethane Foam (PUF) Plugs

... Use for collection of semivolatiles (pesticides, PCBs, PAHs). Both large —Organochlorine and organophosphorus pesticides, carbamate, pyrethrin, triazine, and urea pesticides...

505 Organohalide Pesticide Mix (16 components)

...505 Organohalide Pesticide Mix...

Pesticide Performance Evaluation Mix (6 components)

...Pesticide Performance Evaluation Mix...

Pesticide Matrix Spike Mix (6 components)

...Pesticide Matrix Spike Mix...

Pesticide Standard Mix A (9 components)

...Pesticide Standard Mix A...

Pesticide Standard Mix B (11 components)

...Pesticide Standard Mix B...

Organochlorine Pesticide System Evaluation Mix (2 components)

...Organochlorine Pesticide System Evaluation Mix...

GC Multiresidue Pesticide Standard #1 (16 components)

Organophosphorus Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #1 ... Ampul 1 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

GC Multiresidue Pesticide Standard #3 (25 components)

Organonitrogen Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #3 ... Ampul 3 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

GC Multiresidue Pesticide Standard #4 (28 components)

Organonitrogen Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #4 ... Ampul 4 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

GC Multiresidue Pesticide Standard #5 (34 components)

Organonitrogen Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #5 ... Ampul 5 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

GC Multiresidue Pesticide Standard #6 (18 components)

Synthetic Pyrethroid Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #6 ... Ampul 6 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

GC Multiresidue Pesticide Standard #7 (10 components)

Herbicide Methyl Esters

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #7 ... Ampul 7 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

GC Multiresidue Pesticide Standard #8 (24 components)

Organophosphorus Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #8 ... Ampul 8 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

531.1 Carbamate Pesticide Calibration Mixture (10 components)

...531.1 Carbamate Pesticide Calibration Mixture...

Pesticide Performance Evaluation Mix w/Surrogates (8 components)

...Pesticide Performance Evaluation Mix w/Surrogates...

L/C Pesticide Lab Control Sample (7 components)

...L/C Pesticide Lab Control Sample...

Organophosphorus Pesticide Mix, 8270/Appendix IX (9 components)

...Organophosphorus Pesticide Mix, 8270/Appendix IX...

Canadian Drinking Water OP Pesticides Mix (9 components)

...Canadian Drinking Water OP Pesticides Mix...

Phenols/Anilines/Pesticides Test Mix (9 components)

...Phenols/Anilines/Pesticides Test Mix...

Method 525.2 Nitrogen/Phosphorus Pesticide Mix #2 (6 components)

...Method 525.2 Nitrogen/Phosphorus Pesticide Mix #2...

Pesticide Matrix Spike Mix (2/88 SOW) (6 components)

...Pesticide Matrix Spike Mix (2/88 SOW)...

Method 551.1 Pesticide/Herbicide Mix (16 components)

...Method 551.1 Pesticide/Herbicide Mix...

Organochlorine Pesticide Mix #2 (Rev), Method 525.2 (8 components)

...Organochlorine Pesticide Mix #2 (Rev), Method 525.2...

Organophosphorus Pesticide Mix #1 (Rev), Method 525.2 (7 components)

...Organophosphorus Pesticide Mix #1 (Rev), Method 525.2...

California Pesticide Standards (6 separate mixes)

...Each ampul sold separately.Cat.# 34124: California Pesticide Standard #1 (12 -76-5)Phosmet (732-11-6)Cat.# 34125: California Pesticide Standard #2 (11 components ... California Pesticide Standards ... of Cannabis Control for regulated category I and II residual pesticide reporting—and of states with similar...

Minnesota Ag List 1 Pesticides Mix A (16 components)

...*Added to Minnesota Department of Agriculture List 1 pesticide (neutrals) incident investigation trade names.[1] Analytical Lists for Pesticide Incident Investigations, Minnesota Department ... Minnesota Ag List 1 Pesticides Mix A...

LC Multiresidue Pesticide Standard #3 (38 components)

Carbamate/Uron Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #3 ... Ampul 3 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

LC Multiresidue Pesticide Standard #4 (63 components)

Organonitrogen Compounds

... Accurately detect and quantify pesticides of global food safety concern in a wide pesticide method is offered free of charge; downloadable XLS file includes conditions and transition tables ... LC Multiresidue Pesticide Standard #4 ... Ampul 4 of 10 in the LC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately detect and quantify pesticides of global food safety concern in a wide range...

Florisil PR (Bulk Adsorbent)

...Florisil PR is commonly used to remove polar interferences from pesticide residues. This bulk material is ideal for labs packing their own extraction cartridges for pesticide residue extractions. ... Pesticide residue grade. Packaged in glass containers. ...

531.2 Carbamate Pesticide Calibration Mixture (11 components)

... to the analyte list in 2003. Our 531.2 Carbamate Pesticides Calibration Mixture includes 1-naphthol ... 531.2 Carbamate Pesticide Calibration Mixture...

8140/8141 OP Pesticide Calibration Mix A (20 components)

..., pH, heat, and water. Restek has overcome these issues through our ongoing research into OP pesticide ... 8140/8141 OP Pesticide Calibration Mix A...

GC Multiresidue Pesticide Standard #2 (40 components)

Organochlorine Compounds

... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables composition; detailed support documentation provided. Optimized multiresidue pesticide method ... GC Multiresidue Pesticide Standard #2 ... Ampul 2 of 9 in the GC-MS/MS Multiresidue Pesticide Standard Kit ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

Rt-608Pkd Columns (packed)

Optimized for pesticide analysis by US EPA Method 608.

...Pesticide analysis remains the largest environmental application for packed columns. Currently , mixed phase packed columns do not offer complete resolution of chlorinated pesticides, and require long...

Organochlorine Pesticide Mix AB #1 (20 components)

...Organochlorine Pesticide Mix AB #1...

Organochlorine Pesticide Mix AB #2 (20 components)

...Organochlorine Pesticide Mix AB #2...

Organophosphorus Pesticide Mix, European Formulation (16 components)

...Organophosphorus Pesticide Mix, European Formulation...

Organochlorine Pesticide Mix AB # 3 (20 components)

...Organochlorine Pesticide Mix AB # 3...

Organochlorine Pesticide Resolution Check Mix (with surrogates) (22 components)

...Organochlorine Pesticide Resolution Check Mix (with surrogates)...

Pesticide Standard Mix A w/Surrogates (11 components)

...Pesticide Standard Mix A w/Surrogates...

Pesticide Standard Mix B w/Surrogates (13 components)

...Pesticide Standard Mix B w/Surrogates...

FAPAS Series 9 OP Pesticide Mix 1 (10 components)

...FAPAS Series 9 OP Pesticide Mix 1...

Organonitrogen Pesticide Mix #1 (Rev), Method 525.2 (37 components)

...Organonitrogen Pesticide Mix #1 (Rev), Method 525.2...

GC Multiresidue Pesticide Kit

...Cat.# 32563: GC Multiresidue Pesticide Standard #1 (16 components -03-8)Cat.# 32564: GC Multiresidue Pesticide Standard #2 (40 components)Organochlorine ... GC Multiresidue Pesticide Kit ... pesticide method is offered free of charge for world-class GC-MS/MS multiresidue pesticide analysis: reference and internal ... Accurately identify and quantify pesticide residues by GC-MS/MS in fruits, vegetables...

Rtx-CLPesticides Column Kit, 0.25 mm ID

proprietary Crossbond phases

... resolution and faster analyses, compared to 1701 or phenyl phases, make these the pesticide columns of choice typically encountered in chlorinated pesticide analyses for EPA Methods 8081, 608, and CLP. By achieving ... Application-specific columns for organochlorine pesticides and herbicides...

EPA Method 525.3 PAH IS Mix (3 components)

... pesticide (OCP), organophosphorus pesticide (OPP ), organonitrogen pesticide (ONP), polycyclic aromatic hydrocarbon (PAH...

EPA Method 525.3 PCP IS

... pesticide (OCP), organophosphorus pesticide (OPP ), organonitrogen pesticide (ONP), polycyclic aromatic hydrocarbon (PAH...

EPA Method 525.3 Surrogate Standard (3 components)

... pesticide (OCP), organophosphorus pesticide (OPP ), organonitrogen pesticide (ONP), polycyclic aromatic hydrocarbon (PAH...

Stx-CLPesticides Columns (fused silica with Siltek deactivation)

proprietary Crossbond phase

...Many laboratories analyzing organochlorine pesticides struggle with breakdown and adsorption pesticides. ... Application-specific columns for organochlorine pesticides and herbicides...

Stx-CLPesticides2 Columns (fused silica with Siltek deactivation)

proprietary Crossbond phase

...Many laboratories analyzing organochlorine pesticides struggle with breakdown and adsorption pesticides. ... Application-specific columns for organochlorine pesticides and herbicides...

Stx-CLPesticides Column Kit, 0.25mm ID

proprietary Crossbond phases

...Many laboratories analyzing organochlorine pesticides struggle with breakdown and adsorption pesticides.Note: Columns are not preconnected in this kit. ... Application-specific columns for organochlorine pesticides and herbicides...

Stx-CLPesticides Column Kit

proprietary Crossbond phases

...Many laboratories analyzing organochlorine pesticides struggle with breakdown and adsorption pesticides.Note: Columns are not preconnected in this kit. ... Application-specific columns for organochlorine pesticides and herbicides...

Rtx-OPPesticides2 Columns (fused silica)

proprietary Crossbond phase

... the 53 organophosphorus pesticides (OPP) listed in EPA Method 8141. Separation is improved and analysis with pesticide samples. The low-bleed columns are a perfect match for sensitive detection systems. ... Application-specific columns for organophosphorus pesticides; best column combination...

CarboPrep Reversing SPE Cartridges

... using minimum solvent volumes. Ideal design for extraction of pesticides in water .; Guerriero, E.; and Saperi, R. "Development of a Multiresidue Method for Analyzing Pesticide Traces in Water ... and quantitative recoveries of a wide variety of semivolatiles, pesticides, and herbicides. 500 mg bed...

LC Multiresidue Pesticide Kit

...Cat.# 31972: LC Multiresidue Pesticide Standard #1 (13 components (Vamidoate) (2275-23-2)Cat.# 31973: LC Multiresidue Pesticide Standard #2 (16 components ... LC Multiresidue Pesticide Kit ... pesticide method is offered free of charge; downloadable XLS for world-class LC-MS/MS multiresidue pesticide analysis: reference and internal ... Accurately detect and quantify pesticides of global food safety concern in a wide compounds of interest, covering many LC-determined pesticides listed by government agencies; individual...

Rtx-CLPesticides Column Kit, 0.53 mm ID

proprietary Crossbond phases

... resolution and faster analyses, compared to 1701 or phenyl phases, make these the pesticide columns of choice typically encountered in chlorinated pesticide analyses for EPA Methods 8081, 608, and CLP. By achieving ... Application-specific columns for organochlorine pesticides and herbicides...

Rtx-CLPesticides Column Kit, 0.32 mm ID

proprietary Crossbond phases

... resolution and faster analyses, compared to 1701 or phenyl phases, make these the pesticide columns of choice typically encountered in chlorinated pesticide analyses for EPA Methods 8081, 608, and CLP. By achieving ... Application-specific columns for organochlorine pesticides and herbicides...

Rtx-CLPesticides Columns (fused silica)

proprietary Crossbond phase

... these the pesticide columns of choice. Rtx-CLPesticides columns are specially designed to overcome the coelutions and analyte breakdown typically encountered in chlorinated pesticide analyses for EPA Methods 8081, 608 ... Application-specific columns for organochlorine pesticides and herbicides...

Accurately Quantify 380 Pesticides Using LC-MS/MS and GC-MS/MS (PDF 6072kB)

...Accurately Quantify 380 Pesticides Using LC-MS/MS and GC-MS/MS with Restek’s Multiresidue Pesticide CRM Kits ■ CRM kits include comprehensive lists of pesticides of global concern. ■ Formulated ... , Pesticides, LC-MS/MS...

High Quality Analysis of Pesticides in Marijuana Using QuEChERS, Cartridge SPE Cleanup, and GCxGC-TOFMS (PDF 672kB)

...Technical Article High-Quality Analysis of Pesticides in Cannabis Using QuEChERS, Cartridge SPE assurances for their medication, which could contain harmful levels of pesticide residues. Currently...

Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants (PDF 1051kB)

.../Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants By Michelle Misselwitz and Jack , both with and without sample extract concentration, to analyze pesticides and brominated flame ... , EPA Method 527, CSR-LVSI, pesticides...

Fast, Simple QuEChERS Extraction and Cleanup of Pesticide Residue Samples (PDF 1180kB)

... and Cleanup of Pesticide Residue Samples Achieve a four-fold increase in sample throughput. Significantly EChERS (“catchers”) method for extracting pesticides from food is based on research by the US Department ... sample prep, sample preparation, QuEChERS, dSPE, multiresidue, pesticides, Q-Sep...

Developing New Methods for Pesticides in Dietary Supplements (PDF 4634kB)

... a need for methods to detect pesticides in these complex, largely botanical products. QuEChERS offers and GCTOFMS, resulting in good recoveries for a wide range of pesticide chemistries in dandelion root powder ... dietary supplements, quechers, cSPE, GMP, PAM 303, pesticides, multiresidue, sample prep...

Evaluation of Dispersive and Cartridge Solid Phase Extraction (SPE) Cleanups for Multiresidue Pesticides in QuEChERS Extracts of Finished Tobacco Using GCxGC-TOFMS (PDF 4409kB)

... Pesticides in QuEChERS Extracts of Finished Tobacco Using GCxGC-TOFMS By Michelle Misselwitz, Jack Cochran in the amount of pesticides applied per acre in American agriculture. Even after the processing of tobacco, some...

A Comprehensive Approach to Pesticide Residue Monitoring, Including Non-target Analysis, for Fruits, Vegetables, and Nuts, Using QuEChERS, LC-MS/MS, and GCxGC-TOFMS (PDF 2552kB)

...Foods, Flavors & Fragrances Applications A Comprehensive Approach to Pesticide Residue Testing GC-TOFMS Abstract Food commodities were fortified with pesticides and processed using the QuEChERS sample...

Prepare Olive Oil Samples for Pesticide Residue Analysis in Half the Time with a Fraction of the Solvent Using dSPE (PDF 509kB)

... and cleanup of pesticide residues from olive oil samples—twice as fast as GPC, with only a fraction with pesticide residues have increased consumer interest in testing. While organophosphorus pesticides...

Resprep

Resprep solid phase extraction (SPE) tubes are manufactured with specially cleaned sorbents and high-purity materials to minimize background and help...

Comparing Pesticide Residues in Amish and Commercially Grown Strawberries and Spinach Using QuEChERS, Various dSPE Sorbents, and GC-TOFMS (PDF 1781kB)

...Foods, Flavors & Fragrances Applications Comparing Pesticide Residues in Amish and Commercially , dSPE cleanup, and GC-TOFMS analysis were used to assess pesticide levels in strawberries and spinach...

Analyze Carbamate Pesticides in a Fraction of the Time and Boost Productivity (PDF 787kB)

...Analyze Carbamate Pesticides in a Fraction of the Time and Boost Productivity Featured Application: Carbamate Pesticides on an Ultra Carbamate LC Column Carbamate pesticides are widely used...

Florisil SPE Cleanup for Chlorinated Pesticides Analysis (PDF 936kB)

...Florisil SPE Cleanup for Chlorinated Pesticides Analysis Many chlorinated pesticides have been in U.S. EPA Method 8081B. Despite the fact that most of these chlorinated pesticides are now illegal...

Rtx-CLPesticides and Rtx-CLPesticides2 Columns Instruction Sheet (PDF 441kB)

... selectivities for the separation of organochlorine pesticides, these columns help you achieve faster run times .S. EPA and other method criteria for organochlorine pesticides. Continue reading for instructions...

Seven EPA Methods on One Column Pair (PDF 984kB)

... Pesticides, PCBs, Herbicides and More on a Single Rtx-CLPesticides Column Set Get improved resolution chlorinated pesticides, PCBs, herbicides, and other halogenated compounds on a single column set. Rtx...

Residual Pesticides Analysis of Botanical Ingredients Using Gas Chromatography Triple Quadrupole Mass Spectrometry

...dietary supplements are made from various dried botanicals, which may contain residual pesticides from agric method. Materials and Methods Pesticides standards, internal standards, quality control standards a ... . To be safe from pesticides exposure, residual pesticides must be monitored by chromatographic instrumentation pesticides monitoring in botanical ingredients. ... botanical, GC-MS/MS, QuEChERS, pesticides...

Fast, Simple Sample Cleanup Using QuEChERS SPE Tubes

...ugged, and Safe, the QuEChERS (“catchers”) method for extracting pesticides from food – Samples may be pH adjusted to protect sensitive pesticides and/or solvent-exchanged to improve analysis ... pesticides from food is based on USDA research and employs a novel dispersive solid phase extraction cleanup cleanup using a multiresidue analysis of pesticides on strawberries. ... QuEChERS, dSPE, strawberries, multiresidue, pesticides...

Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants

... concentration, to analyze pesticides and brominated flame retardants in drinking water. When extract -LVSI technique to drugs of abuse screening, pesticides, and polychlorinated biphenyls by injecting 20–35 µ ... for analyzing pesticides and brominated flame retardants in drinking water based on EPA Method 527. CSR ... , "EPA Method 527", "CSR-LVSI", pesticides...

Comprehensive Pesticide Residue Analysis by LC-MS/MS Using an Ultra Aqueous C18 Column

... Easily resolve and quantify more than 280 pesticide species. Use LC of our food supply is becoming increasingly important. Pesticide residue content is one area of concern ... Analysis of pesticide residues in foods is complicated by the large number of target compounds. LC ... Pesticides, ultra aqueous c18, pesticide residue, LC/MS/MS, multiresidue...

A Guide to Preparing and Analyzing Chlorinated Pesticides (PDF 4038kB)

...Technical Guide A Guide to Preparing and Analyzing Chlorinated Pesticides Inside: Extraction Analysis of Chlorinated Pesticides Summary...

Pesticides in Dietary Supplements: Advantages of QuEChERS vs. PAM 303

..., assuring accurate pesticide determination these regulations, dietary supplements must be tested for pesticide contaminants, since the products are largely ... Restek has developed the first QuEChERS-based method for determining pesticide residues in dietary ... PAM 303, SPE, cSPE, QuEChERS, pesticides, multiresidue, dietary supplements, sample prep...

Comprehensive Pesticide Residue Analysis by LC/MS/MS Using an Ultra Aqueous C18 Column (PDF 1039kB)

...Foods, Flavors, & Fragrances Comprehensive Pesticide Residue Analysis by LC/MS/MS Using an Ultra Aqueous C18 Column • Easily resolve and quantify more than 280 pesticide species. • Use LC...

Determining Pesticides in Dietary Supplements with QuEChERS Extraction, Cartridge SPE, and GCxGC-TOFMS (PDF 1695kB)

...General Applications Determining Pesticides in Dietary Supplements with QuEChERS Extraction pesticide methods for dietarysupplements. Minimizing matrix interference is critical for data accuracy...

Mitigating Matrix Effects: Examination of Dilution, QuEChERS, and Calibration Strategies for LC-MS/MS Analysis of Pesticide Residues in Diverse Food Types (PDF 1561kB)

...EChERS, and Calibration Strategies for LC-MS/MS Analysis of Pesticide Residues in Diverse Food Types By Julie Kowalski for monitoring pesticide residues in food. The increased selectivity and sensitivity of LC-MS/MS have impacted...

Analyze Seven EPA Methods on One GC Column Pair! Pesticides, PCBs, Herbicides, and More on Rtx-CLPesticides & Rtx-CLPesticides2 Columns (PDF 5571kB)

...Restek GC Columns Analyze Seven EPA Methods on One GC Column Pair! Pesticides, PCBs, Herbicides selectivity assures optimal separations. Analyze Pesticides, PCBs, Herbicides, and More on Rtx...

Helium, Hydrogen, or Nitrogen—The Choice is Yours: Unique Rtx-CLPesticides Column Set Provides Optimal Results for Organochlorine Pesticides GC-Micro-ECD Analysis Using Any Carrier Gas (PDF 930kB)

... Optimal Results for Organochlorine Pesticides GC-Micro-ECD Analysis Using Any Carrier Gas By Jason Thomas is adequate. For heavily used methods that employ helium, such as organochlorine pesticides analysis following...

Determining Pesticides in Dietary Supplements with QuEChERS Extraction, Cartridge SPE, and GCxGC-TOFMS

...Regulatory requirements are driving the development of new multiresidue pesticide methods that ensures product safety, and, since many dietary supplements are botanically based, pesticide residue ... GC-TOFMS analysis, resulting in good recoveries for a wide range of pesticides in dietary supplements. Matrices ... "dietary supplements", "cartridge SPE", GCxGC, GCxGC-TOFMS, Pesticides, QuEChERS, cSPE, GC-TOFMS...

QuEChERS Made Even Easier: Comprehensive Solutions Simplify Sample Prep and Analysis (PDF 5489kB)

...EChERS technique has evolved to accommodate an expanding list of pesticides in an increasingly diverse list . If you are frustrated with the time and expense of your current pesticide sample cleanup procedure, we...

Growing Analytical Solutions for Cannabis Testing: Innovative Products and Expertise for Fast, Accurate, Reliable Results (PDF 8494kB)

... cannabinoids, residual solvents, pesticides, or terpenes by GC, the inertness of your inlet is crucial . For pesticides analysis, a fast, easy cleanup method is required to remove the matrix background for accurate...

GC Column Installation Made Easier with Extended Reducing Nuts for the Agilent Split/Splitless Inlet (PDF 660kB)

... pesticides, with one analysis using the insulating cup and with the other analysis not using the insulating (nut warmer cup) installed, especially for lower volatility pesticides. Not only do you get better...

Will Pro EZGC Chromatography Modeling Software Work For You? We Put It to the Test! (PDF 2272kB)

... predicted the correct elution order and relative retention times for a set of pesticides ) Sample Minnesota Ag List 1 pesticide kit (cat.# 32408) Diluent: Acetone Conc.: 100 ppm Injection Inj...

7.5-Min Screening Analysis of Multiresidue Pesticides in Brown Rice Flour (PDF 1504kB)

...www.restek.com 7.5-Min Screening Analysis of Multiresidue Pesticides in Brown Rice Flour Featured Application: Multiresidue Pesticide Mix Extracted from Brown Rice Flour Using QuEChERS Extraction...

LC and GC Multiresidue Kits

Restek's new LC-MS/MS and GC-MS/MS multiresidue pesticide standards kits include comprehensive lists of pesticides of global concern that are frequently analyzed on a wide range of fruits, vegetables, botanicals, herbals, and dietary supplements; individ...

A Guide to the Analysis of Halogenated Environmental Pollutants Using Electron Capture Detection (PDF 8131kB)

... for halogenated pollutants. • Includes analysis of chlorinated pesticides, PCBs, chlorinated herbicides ), and biota (fish and animal tissue). Classes of compounds such as chlorinated pesticides, polychlorinated...

Florisil SPE Cartridge Instruction Sheet (PDF 222kB)

... SPE cleanup of chlorinated pesticide extracts following EPA Method 3620C* Cartridge: 1,000 mg dry. Allow the cartridge to soak for 5 minutes. Sample: Add 1 mL of pesticide sample in hexane...

CarboPrep 90 SPE Cartridge Instruction Sheet (PDF 223kB)

...Procedure for CarboPrep 90 SPE cleanup of chlorinated pesticide extracts* Cartridge: 250 mg Carbo or CarboPrep bed to go dry. Allow the cartridge to soak for 5 minutes. Sample: Add 1 mL of pesticide...

Health And Safety Declaration for Return of Restek Products (PDF 548kB)

... Pesticides Hydrocarbons Controlled Substances or Drugs Other (please specify): Other (please specify): D...

Method 8081B: Organochlorine Pesticides Analysis by GC Get results in seven minutes

... pesticides emerged in the 1940s, but are no longer used today due to their persistence in the environment for organochlorine pesticide analysis in a variety of difficult sample matrices. The selectivity...

Faster Organochlorine Pesticide Sample Throughput On New Rtx-CLPesticides & Rtx-CLPesticides2 Columns

... for reducing run time for the organochlorine pesticides analyzed under US EPA Method 8081. This method requires dual column analysis for confirmation of 20 chlorinated pesticides using an ECD for detection ... organochlorine pesticides are resolved in <9 min. We also show complete separation of these compounds in <5...

Restek Advantage, 2012.1 (PDF 14846kB)

... range for semivolatiles…pp. 8–9 • QuEChERS with LC-MS/MS and GCxGC-TOFMS for comprehensive pesticide ranging from pesticide analysis to therapeutic drug monitoring. Rick Lake and Ty Kahler help you find...

Restek GCxGC Columns: Your One Source for 2D Gas Chromatography (PDF 9170kB)

..........................................4–5 PCBs and BDEs...............................................6 Pesticides in Dietary ..................................................9 Cannabinoids in Marijuana....................10 Pesticides in Marijuana...

ChromaBLOGraphy: Pesticides in Dietary Supplements

I was at the Recent Advances in Food Analysis conference in Prague last week and presented work on analyzing pesticides in dietary supplements, a very important subject given that FDA is moving to regulate these products. They are very complex herbal, botanical, etc. materials, which makes looking for trace level components very tricky. My colleagues, [...]

Keep Your Instruments Up and Running with CarboPrep Plus SPE Cartridges (PDF 4848kB)

.... Unfortunately, for the analysis of organochlorine pesticides in soil and water, the industry standard sample of Organochlorine Pesticides by Electron Capture Detector The Sample CarboPrep Plus CarboPrep Plus Florisil...

A Comprehensive Approach to Pesticide Residue Testing, Including Non-Target Analysis, for Fruits, Vegetables, and Nuts, Using QuEChERS, LC-MS/MS, and GCxGC-TOFMS

...Abstract Food commodities were fortified with pesticides and processed using the Qu pesticide concentrations. Good recoveries were obtained for most pesticides in most commodities ... Food commodities that varied in water, fat, and pigment content were fortified with pesticides -MS/MS, and good recoveries were obtained for most pesticides in most commodities....

Residual Pesticides Analysis of Botanical Ingredients Using Gas Chromatography Triple Quadrupole Mass Spectrometry (PDF 2566kB)

... supplements are made from various dried botanicals, which may contain residual pesticides from agricultural and Methods Pesticides standards, internal standards, quality control standards and a QuEChERS kit were...

Featured Application: Carbamate Pesticides on an Ultra Carbamate LC Column Analyze Carbamate Pesticides in a Fraction of the Time and Boost Productivity

.... Carbamate pesticides are widely used insecticides that pose human and environmental health risks due to their activity as endocrine disruptors. While many pesticides can be analyzed successfully using GC, carbamate ... Carbamate pesticides can be analyzed much faster on an Ultra Carbamate LC column than on a C18...

CarboPrep Plus Instruction Sheet (PDF 205kB)

... for Organochlorine Pesticide Sample Extract Cleanup meniscus top frit cartridge bed bottom frit Figure 1 that are commonly used for organochlorine pesticide analysis sample preparation (e.g., retention of 2...

Method 505: Analysis of Organohalide Pesticides and Commercial PCBs in Water by Microextraction and GC by Microextraction and Gas Chromatography

... in part to the role of pesticides and herbicides in mitigating the devastating effects of many plant contamination. EPA Method 505 is used for organohalide pesticide analysis in drinking and ground water...

Raptor ARC-18 LC Columns Brochure (PDF 4942kB)

... pesticide standard #1 (cat.# 31972); Diluent: Water; Conc.: 20 ng/mL; Inj. Vol.: 5 μL; Mobile Phase: A . The Standard for Reproducibility for SPP Core-Shell Columns After 500 injections, pesticide compounds...

Method 8081B: Organochlorine Pesticides Analysis by GC (Extended)

... labs extend the list of compounds tested using Method 8081B to include other organochlorine pesticides in a parallel dual-column configuration to reliably quantify 38 commonly analyzed organochlorine pesticides...

Analytical Method for Polycyclic Aromatic Hydrocarbons (PAHs) in Yerba Mate Tea Using Modified QuEChERS, Solid Phase Extraction and GC-TOFMS and GC-MS/MS (PDF 634kB)

... by dispersive solid phase extraction cleanup [26, 27]. Although QuEChERS was originally designed for pesticide the original scope. Compounds other than pesticides, like PAHs, veterinary drugs, and persistent organic...

ChromaBLOGraphy: George Fong Interview – Florida Pesticide Residue Workshop

Restek just published an interview with the founder of the Florida Pesticide Residue Workshop.  Read it. To quote Stan Lee: “Nuff said”.  Sitting Down With a Chromatography Icon: W. George Fong

Sitting Down With a Chromatography Icon: W. George Fong

... Florida Pesticide Residue Workshop (FPRW), my Restek colleagues and I received some sad news: George of pesticide detection and analysis would not be what it is today without FPRW and, therefore, without George ... into an international event, George's involvement in the history and future of pesticide residue analysis, and more....

Restek GCxGC Columns: Your One Source for 2D Gas Chromatography (PDF 471kB)

... MS Low polarity Rxi-XLB Low polarity, planar selective Pesticides, nitroaromatics, halogenated compounds Rxi-1ms Non-polar Rtx-200 Mid polarity, electronegative selectivity Pesticides...

Matrix Effects in Multi-Residue Pesticide Analysis When Using Liquid Chromatography-Tandem Mass Spectrometry

... Nutrition. His research interests focus on trace analysis of various contaminants, such as pesticides and mycotoxins, in foods using LC/MS and GC/MS. Consumption of pesticide-contaminated food via daily ... Matrix effects present a significant challenge to multi-residue pesticide analysis of food samples...

Fast Screening of Recalled Tylenol for Tribromoanisole and Related Adulterants (PDF 283kB)

... fruit and vegetable samples for pesticide residue analysis, is being adopted for other applications of Plant Origin—Determination of Pesticide Residues Using GC-MS and/or LC-MS/MS Following Acetonitrile...

Prepare Olive Oil Samples for Pesticide Residue Analysis in Half the Time With a Fraction of the Solvent Using dSPE

... and cleanup of pesticide residues from olive oil samples—twice as fast as GPC, with only a fraction recommended diets. However, concerns about potentially negative health effects associated with pesticide ... and clean-up of pesticide residues from olive oil samples—twice as fast as GPC, with only a fraction...

High-Quality Analysis of Pesticides in Cannabis Using QuEChERS, Cartridge SPE Cleanup, and GCxGC-TOFMS

...Quickly and effectively extract medical marijuana samples for pesticide analysis columns increase accuracy of pesticide determinations for complex samples. Over 20 states ... As medical marijuana is more frequently prescribed, patient safety must be ensured. Pesticide...

Comparing Pesticide Residues in Amish and Commercially Grown Strawberries and Spinach Using QuEChERS, Various dSPE Sorbents, and GC-TOFMS

...SPE cleanup, and GC-TOFMS analysis were used to assess pesticide levels in strawberries and spinach from both effective. Good recoveries were obtained for most pesticides; however, low recoveries were observed for some ... QuEChERS extraction, dSPE cleanup, and GC-TOFMS analysis were used to assess pesticide residue...

ChromaBLOGraphy: What pesticides have you eaten today?

This was the question asked by Texas middle school student Liesl Krone, and the driver behind her recent (award winning) science fair project. Liesl became interested in food safety after hearing news reports on food quality issues. She loves fruit and wondered if she was consuming pesticides along with beneficial nutrients. To answer that question, [...]

ChromaBLOGraphy: George Fong and the Florida Pesticide Residue Workshop

I’m getting ready to head over to the 48th Florida Pesticide Residue Workshop, and it will be a bittersweet conference this year since my friend and colleague, George Fong, is retiring from the meeting after many years of dedicated leadership and oversight.  George and his wife Wilma have been fixtures at the meeting since its [...]

Featured Application: Derivatized Amphetamines on Rxi-5Sil MS (PDF 790kB)

... compounds, chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides , organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons. • Temperature range: -60 °C to 350 °C...

ChromaBLOGraphy: Pesticide analysis for cannabis flower: method and data overview

Pesticides in cannabis has been a hot topic lately and we have been getting many requests for help with this analysis. We did work on pesticide residue testing in cannabis about 6 years ago. At that time, we were limited to testing our methods with a small amount of seized material. Recently, we have been […]

ChromaBLOGraphy: Construction of a Conference – European Pesticide Residue Workshop 2012

The European Pesticide Residue Workshop starts today, June 25, 2012, in the historical city of Vienna, Austria.  This series of conferences runs mainly on the strong efforts of volunteers, including students, one here in Vienna who was kind enough to help me hang six Restek posters today.  You can see the titles of the posters [...]

News: Developing New Methods for Pesticides in Dietary Supplements

Author(s): Julie Kowalski, Michelle Misselwitz, Jason Thomas,  Jack Cochran Published By: Food Safety Magazine Issue: February/March 2012 Year of Publication: 2012 Link: http://www.foodsafetymagazine.com/article.asp?id=3876&sub=sub1 Abstract: New requirements for dietary supplements to be manufactured under current Good Manufacturing Practices (cGMP) regulations have created a … Continue reading

Rxi GC Columns Sales Sheet (PDF 3173kB)

..., essential oils, hydrocarbons, pesticides, PCB congeners (e.g., Aroclor mixes), sulfur compounds, amines , amines, residual solvents, drugs of abuse, pesticides, PCB congeners (e.g., Aroclor mixes), solvent...

ChromaBLOGraphy: Team Restek at the Florida Pesticide Residue Workshop

I really consider myself to be lucky at the Florida Pesticide Residue Workshop (FPRW) this week (even though I did not win any of the door prizes!), because I get to work with a fantastic team of Restek people.  You met two of them in previous blogs, Julie Kowalski and Michelle Misselwitz, who were not [...]

ChromaBLOGraphy: EPRW: European Pesticides Residue Workshop in Sunny Cyprus

                                    Just wanted to let everyone know that we have published our presentations we presented at EPRW (European Pesticide Residue Workshop) last month in Limassol, Cyprus. It was a great meeting in a beautiful location. It was a pleasure to […]

ChromaBLOGraphy: Gimme some sugar, baby. Analyte Protectants in Pesticide Analysis.

Scott’s post, “The Solvent Shield”, reminds me of using “analyte protectants” (APs) for determining pesticides in baby food via QuEChERS and GCxGC-TOFMS. A matrix-enhanced response occurs for many polar pesticides in food extracts, versus solvent alone, leading analysts to use “matrix-matched standards” (MMSs) for quantification (standards prepared in pesticide-free food extracts). Sugars and other hydrogen-bonding [...]

News: QuEChERS, GC Smoke Out Tobacco Pesticides

Author(s): Michelle Misselwitz, Jack Cochran, Julie Kowalski Restek Corporation Published By: Chromatography Techniques Year of Publication: 2014 Link: http://www.chromatographytechniques.com/articles/2013/12/quechers-gc-smoke-out-tobacco-pesticides Abstract: Pesticides are used heavily on tobacco in order to increase crop production value; however, limited regulation creates the potential for high … Continue reading

Evaluation of Dispersive and Cartridge Solid Phase Extraction (SPE) Cleanups for Multiresidue Pesticides in QuEChERS Extracts of Finished Tobacco Using GCxGC-TOFMS

... in the amount of pesticides applied per acre in American agriculture. Even after the processing of tobacco, some pesticide residues remain on the final product. We used the Quick–Easy–Cheap–Effective–Rugged–Safe (Qu ... We compared the efficacy of dSPE and cSPE cleanup methods for multiresidue pesticide analysis of Qu...

News: New Oregon Cannabis Pesticide Standards—Injecting Confidence in Your Analysis

Restek is pleased to announce the launch of new pesticide residue standards to meet the specific cannabis analysis needs of Oregon—and states with similar pesticide residue regulations/programs. Dissolved in acetonitrile and formulated for stability, the 59 compounds are separated into … Continue reading

Featured Application: Multiresidue Pesticide Mix Extracted from Brown Rice Flour Using QuEChERS Extraction and Cleanup 7.5-Min Screening Analysis of Multiresidue Pesticides in Brown Rice Flour

... and modern UHPLC instruments. Analysis of multiresidue pesticides rice flour was fortified with all of the components included in the Restek LC multiresidue pesticide ... Multiresidue pesticides analysis presents many challenges, from extensive lists of chemically...

GC/MS Analysis of Melamine and Cyanuric Acid Below 1µg/g in Infant Formula (PDF 935kB)

..., Advantage 2008.01, 14-15 (2008). [4] C.F. Poole, Matrix-induced response enhancement in pesticide residue introduction with analyte protectants in the GC–MS analysis of pesticide residues, J. Sep. Sci. 28, 1048...

ChromaBLOGraphy: Great Internal Standards for Pesticide Residues…SRMs too!

  In just about all of my pesticide residue work, I use a convenient multicomponent internal standard mix that contains several PCBs as well as popular internal standard compound triphenylphosphate. The mix contains the six compounds in the chromatogram below. I have been working on a method for our GC Multiresidue Pesticides Kit which has […]

Method 508.1: Determination of Chlorinated Pesticides and Herbicides Analysis by Liquid-Solid Extraction and Electron Capture GC

... compounds, including chlorinated pesticides, herbicides, and organohalides. In order to increase sample -CLPesticides/Rtx-CLPesticides2 column pair offers an ideal balance of speed and resolution for chlorinated pesticide, herbicide...

ChromaBLOGraphy: Julie Kowalski on the Front Lines at the European Pesticide Residue Workshop

The photo shows Restek’s own Julie Kowalski, Food Innovations Chemist, discussing her European Pesticide Residue Workshop Poster, “Evaluation of the QuEChERS Sample Preparation Method and Comprehensive Two-Dimensional Gas Chromatography for the Analysis of Pesticides in Dietary Supplements”, with an interested workshop attendee.  Both QuEChERS and GCxGC (comprehensive two-dimensional GC) are popular techniques at the conference, [...]

ChromaBLOGraphy: Pesticides on Roses – The QuEChERS Sample Preparation Approach

A couple of years ago we had a summer intern in our Innovations lab, Shane Stevens, whose project with us was developing a QuEChERS sample preparation approach for pesticides on cut flowers, including roses.  He presented his work at the 12th Annual Environmental Chemistry Student Symposium at The Pennsylvania State University (PSU) with the distinction of [...]

News: Single-Compound Standards from Restek Improve the Analysis of Difficult Pesticides

Troublesome pesticides can be analyzed more easily and accurately with single-compound standards from Restek. New individual standards are now available for dicofol, metribuzin, bromacil, lenacil, dodine, anilazine, captan, and folpet. Use these standards to simplify method development, establish instrument detection … Continue reading

QuEChERS Solutions

Learn how to use the QuEChERS approach to perform faster, easier sample preparation and cleanup for multiresidue pesticide analysis. Q-sep QuEChERS p...

ChromaBLOGraphy: Testing for pesticides in tobacco… QuEChERS makes it easy!!

Whenever it is time to analyze pesticides in complex matrices I always hope that we can use the QuEChERS sample preparation approach and not something more laborious!  The Quick-Easy-Cheap-Effective-Rugged-Safe method was developed for multiresidue pesticides in fruits and vegetables, however we have been using this approach outside of the typical fruit and vegetable matrices with [...]

ChromaBLOGraphy: Restek Colleagues and QuEChERS at the Florida Pesticide Residue Workshop

Jonathan Keim, Michelle Misselwitz, and Julie Kowalski manning the Restek booth at the 47th Florida Pesticide Residue Workshop and showing off the new Restek Q-sep QuEChERS extraction salts packets.

ChromaBLOGraphy: Jonathan Keim becomes Jonathan Chime at the Florida Pesticide Residue Workshop

Restek Sample Preparation Product Manager, Jonathan Keim, was assigned one of the most important jobs at the 47th Florida Pesticide Residue Workshop, that of xylophone artiste’ to alert conferees who are visiting exhibitors and posters at coffee break to return to the starting Technical Session.  He got the hang of it quickly and his “Smoke [...]

ChromaBLOGraphy: Florida Pesticide Residue Workshop – July 18-21

If you are a pesticide residue chemist, or you have a hankering to learn about veterinary drug analyses, then this meeting could be for you.  In addition, FPRW is sponsoring a special session on Sun, July 18, for discussion of analytical issues surrounding the recent BP Gulf oil spill.  For that, we are pleased to have [...]

News: New Pesticide CRMs Released Specifically for Cannabis Labs in California and Similar States

Restek’s support for cannabis-testing labs continues to grow. This latest offering will help you meet the specific cannabis analysis needs of California set forth by the Bureau of Cannabis Control for regulated category I and II residual pesticide reporting—and of … Continue reading

ChromaBLOGraphy: Michelle Misselwitz Does Dietary Supplements at Florida Pesticide Residue Workshop

No, I’m not revealing any of Michelle’s personal habits here. But I do want to say what a great job she did talking about QuEChERS, cartridge SPE, and GCxGC-TOFMS for the analysis of pesticides in dietary supplements at the Restek vendor seminar at FPRW last night (Sunday). Her talk was visually stimulating, great graphics, and [...]

ChromaBLOGraphy: Creepy Crawly Bedbugs Back in the News Again – Pesticide Resistance

I was watching ABC News yesterday and one of the stories reported was on bedbugs evolving to resist pesticides through toxin breakdown mechanisms via enzymes.  This Ohio State University study supplements earlier findings that genetic changes in bedbugs allow them to protect their nerve cells from pesticides. As Louis Sorkin, an entomologist from the American [...]

Growing Analytical Solutions For Cannabis Testing Innovative Products And Expertise For Fast, Accurate, Reliable Results

.... Pesticide Analysis Ensure Product Safety with Fast, Selective Multiresidue Pesticide Analysis In addition to residual solvents, cannabis products can contain residues of pesticides that were applied ... potency, terpenes, residual solvents, and pesticide residues. And we are developing the products you...

ChromaBLOGraphy: Easy Peasy: Optimized LC-QTRAP Method for Pesticide Residues

Despite what is sometimes advertised, setting up optimized methods for multiresidue pesticide analysis is typically not “easy peasy” and can be quite time consuming. Luckily, some colleagues are willing to share their method with us. Thank you Kelli, James, and Jon!* The downloadable spreadsheet contains retention times, transitions, ionization and collision parameters for our LC […]

ChromaBLOGraphy: Maybe a rose is a rose is a rose, but a “5” is not a “5”, when it comes to pesticide analysis…

Greetings from South Africa, where I did a recent lecture on GC column selectivity and got the age-old question, “Are all “5” phases (5% diphenyl type) the same?” One easy answer, and you’ll certainly notice it if you are a pesticide chemist, is that the Rxi-5ms, a pendant-based 5% phenyl column, is definitely NOT the [...]

ChromaBLOGraphy: Enhanced Pesticide Activity When Using Hydrogen as a Carrier Gas

During recent work using the Rtx-CLPesticides and Rtx-CLPesticides2 columns, I was exploring the use of both hydrogen and nitrogen as a carrier gas for analysis of EPA Method 8081 organochlorine pesticides and ran into a bit of a problem when I switched my system over to hydrogen from helium. Several components experienced a dramatic reduction [...]

Rxi-5Sil MS: Exceptionally Inert Columns for GC/MS and Trace-Level Analyses (PDF 995kB)

..., organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons...

Raptor ARC-18 LC Columns Sales Sheet (PDF 1872kB)

... 500Injection 1 After 500 injections, pesticide compounds are well within narrow, 15-second MRM : 2.7 μm; Temp.: 50 °C; Sample: LC multiresidue pesticide standard #1 (cat.# 31972); Diluent: Water...

ChromaBLOGraphy: Selectivity differences in arylene GC phases…pesticides and zebras.

Although not obvious even to a careful observer, no zebra has exactly the same stripe pattern. Fortunately for GCers, there isn’t that much variation in “5 type” columns, but users need to be aware that 5% pendant phenyl and 5% phenyl-as-silphenylene (or arylene) columns have slightly different selectivities. Recently we analyzed 31 pesticides on Rxi-5ms [...]

ChromaBLOGraphy: Restek at the Florida Pesticide Residue Workshop Starting July 18

  Join me and my colleagues Michelle Misselwitz, Julie Kowalski, and Jonathan Keim at the Florida Pesticide Residue Workshop next week for some fun science.  In addition to the offerings below, we’ll also be handing out some sweet treats (hint: one of my co-workers has the same initials) at our exhibition booth.  Restek Seminar   Sunday, July 18, [...]

ChromaBLOGraphy: The Most Useful Pesticide Standard Ever…monitoring GC inlet “dirtiness”

I have spent most of my time over the past several years testing pesticides and there is one standard that I simply can’t live without…QuEChERS Performance Standards Kit. It is based on a really interesting article* on analyte protectants with a few compounds added. The standard has 40 compounds housed in three vials for long […]

ChromaBLOGraphy: The Impact of a Dirty Marijuana Extract on Pesticide Recoveries from a Splitless GC Inlet

In a previous post I told you about our experimentation with marijuana (that didn’t sound right…) and pesticide extraction via QuEChERS.  An important part of that work was cartridge solid phase extraction (cSPE) cleanup with 500mg CarboPrep 90 / 500 mg PSA cartridges.  To minimize losses of planar pesticides (e.g hexachlorobenzene), which we know can [...]

ChromaBLOGraphy: Steve Lehotay of USDA Gives Keynote Lecture at European Pesticide Residue Workshop 2012

Steve Lehotay of the USDA, a co-inventor of the QuEChERS sample preparation approach, delivered the opening lecture of EPRW 2012, “MMM means multiclass, multiresidue method, which accommodates more more more, but when is “more” enough?”.  His main point seemed to be that as analytical chemists we need to have good reason for our pesticide residue [...]

ChromaBLOGraphy: Phlogisticated Air as a GC Carrier Gas for Organochlorine Pesticide Analysis

What is this guy talking about, phlogisticated air?  Well, that’s what Professor Ellery sometimes called nitrogen when I was still in school at Miskatonic University.  In a previous post, I asked readers to consider nitrogen as a GC carrier gas, and following up on my recent post about hydrogen carrier gas, and in the context [...]

News: Cochran to Present at International Symposia on Recent Developments in Pesticide and POPs Analysis

Restek’s Jack Cochran will be a featured speaker at both the 1st International Symposium on Recent Developments in Pesticide Analysis and the 10th International Symposium on Recent Developments in POPs Analysis. Both symposia are free, two-day events organized by Thermo … Continue reading

Vu2 Union Connectors Instruction Sheet (PDF 109kB)

... of pesticides, semivolatile pollutants, or clinical/forensic samples. Description Deactivated, Universal Press...

GC Capillary Columns 101 Infographic (PDF 1706kB)

.... For example, an Rxi-PAH column separates key PAHs that coelute on standard phases. Pesticides Volatiles...

ChromaBLOGraphy: Improve Retention and Peak Shape for Early-Eluting Pesticides in LC-MS/MS

How important is the HPLC column in a comprehensive LC-MS/MS screening method? LC-MS/MS is quickly gaining acceptance for residue testing, and can simultaneously monitor hundreds of pesticides, including those difficult to detect by GC. With such a powerful detector, hasn’t the column become simply a sample inlet device? While the MS/MS detector allows for specific, [...]

QuEChERS Bibliography

... of Pesticide Residues in Produce. (M. Anastassiades, S.J. Lehotay, D. Stajnbaher, F.J. Schenck, J. AOAC of Pesticide Residues in Low-Fat Products. (http...

ChromaBLOGraphy: Keep your nut warm this winter and improve GC pesticide response.

Hello from the Southern Hemisphere (Stellenbosch, South Africa), where the temperature is likely much warmer than central PA, my usual lab haunt. First, I’d like to acknowledge some chromatographers from this world area and encourage you to seek out their publications to know that innovative work is not the sole domain of the North. Ben [...]

HPLC Analysis of Glucosinolates in Vegetable Extracts without Ion Pairing Using an Ultra Aqueous C18 Column (PDF 675kB)

..., the degradation compounds of glucosinolates have been shown to act as natural pesticides and fungicides...

Mitigating Matrix Effects: Examination of Dilution, QuEChERS, and Calibration Strategies for LC-MS/MS Analysis of Pesticide Residues in Diverse Food Types

... pesticide residues in food. The increased selectivity and sensitivity of LC-MS/MS have impacted how ), high fat (avocado), citrus (lime), and dry (brown rice flour) foods, with subsequent pesticide residue ... LC-MS/MS is popular for monitoring pesticide residues in food due to its selectivity...

ChromaBLOGraphy: Pesticides/Fungicide cocktails responsible for Death of Bees: analysis via GC-MS

  Researchers at the University of Maryland and the US Department of agriculture may have uncovered the mystery of high mortality in honeybees. These insects are responsible for pollinating over 130 different crops in the US alone. Loss of this pollinator species could cost the US $15 Billion annually. The EU (European Union) issued a […]

ChromaBLOGraphy: Analyzing pesticides in herbal tea using QuEChERS and GCxGC-TOFMS of course!

Herbal tea, a non-caffeinated drink made from plants, herbs, or spices has been used throughout history for its potential medicinal benefit.   Various herbal material is mixed depending on the desired medicinal or flavor properties for the tea.   As with any plant based commodity, there is the potential for pesticide residues to remain in the final […]

ChromaBLOGraphy: LC-MS/MS the Future of New Pesticide Analysis According to Speakers at FPRW

Two representatives from companies who make crop protection/science chemicals (pesticides, etc.) spoke at the Florida Pesticide Residue Workshop this week.  Tom Gould of Bayer Crop Science gave the presentation Conversion of Three Old Style Analytical Methods to LC/MS-MS Technology Utilizing Isotopic Internal Standards and Jim Stry of DuPont Crop Protection talked on Trends in Residue [...]

ChromaBLOGraphy: Keep your GC organochlorine pesticide analysis systems up longer by using split injection.

As noted in earlier blogs, “Fast Organochlorine Pesticide Analysis Using Hydrogen Carrier Gas with Split Injection GC-ECD” and “Split Injection Minimizes Endrin and DDT Breakdown for GC-ECD Analysis of Organochlorine Pesticides”, split injection is a viable alternative to splitless injection for analysis of organochlorine pesticides (e.g. when using EPA Method 8081). Notable benefits include: 1.  […]

News: Fortify or Calibrate for 203 Pesticides by GC-MS/MS With This Single Restek® CRM Kit

GC-MS/MS is the technique of choice for analyzing pesticide residues in many fruits, vegetables, botanicals, and herbals like tea, ginseng, ginger, Echinacea, and dietary supplements. And Restek’s new GC-MS/MS pesticide reference standards kit contains over two hundred compounds pulled from … Continue reading

News: Accurately Detect and Quantify 204 Pesticides of Global Food Safety Concern by LC-MS/MS

Stop spending your time and money developing LC-MS/MS multi-residue pesticide methods and mixing reference standards when you could be running samples! Restek’s trusted food safety experts have already done the work for you—with guaranteed accuracy and at a lower cost. … Continue reading

News: Matrix Effects in Multi-Residue Pesticide Analysis When Using Liquid Chromatography-Tandem Mass Spectrometry

Author(s): Kai Zhang Published By: Restek Corporation Year of Publication: 2011 Link:http://www.restek.com/Technical-Resources/Technical-Library/Editorial/mis_0026 Abstract: Matrix effects present a significant challenge to multi-residue pesticide analysis of food samples using LC/MS/MS. In this editorial, Dr. Kai Zhang, of the FDA Center for Food … Continue reading

News: 7.5-Min Screening Analysis of Multiresidue Pesticides in Brown Rice Flour

Published By: Restek Corporation Year of Publication: 2018 Link: http://www.restek.com/Technical-Resources/Technical-Library/Foods-Flavors-Fragrances/fff_FFSS2930-UNV Abstract: Multiresidue pesticides analysis presents many challenges, from extensive lists of chemically diverse analytes to the negative effects of complex matrix components. The optimized chromatographic method described here allows the analysis of hundreds … Continue reading

News: Pyrethrins CRM Added to Restek Single-Compound Standards List for Improved Analysis of Difficult Pesticides

Troublesome pesticides can be analyzed more easily and accurately with single-compound standards from Restek. We’ve just added a new pyrethrins CRM to our inventory, so individual reference standards are now available for dicofol, metribuzin, bromacil, lenacil, dodine, anilazine, captan, folpet, … Continue reading

ChromaBLOGraphy: Spring is Coming and So Are Fleas and Ticks. But Be Careful with Spot-On Pesticides for Pets!

We have many dog and cat lovers at Restek. Sometimes love is protecting our furry friends against fleas and ticks with “spot-on” pesticides. Elimination of biting and disease-carrying insects via these products is beneficial, but due to increases in adverse incidents, US EPA is acting to increase their safety. EPA is reviewing product labels for [...]

News: Residual Pesticides Analysis of Botanical Ingredients Using Gas Chromatography Triple Quadrupole Mass Spectrometry

Author(s): Riki Kitano1, Tairo Ogura1, Nicole Lock1, Robert Clifford1, Julie Kowalski2, Jack Cochran2, Dan Li2 1. Shimadzu Scientific Instruments, Inc. 2. Restek Corporation Published By: Restek Corporation Year of Publication: 2019 Link: www.restek.com/Technical-Resources/Technical-Library/Foods-Flavors-Fragrances/fff_FSAR3080-UNV Abstract: Dietary supplements, which are consumed worldwide, … Continue reading

ChromaBLOGraphy: From the Front Lines: Waging War on Bugs.

In 1901 the bacterium Bacillus thermingiesis (Bt) was found to be lethal to silkworms and soon after it was introduced as a pesticide for moths (order Lepidoptera). It was not until 1956 that the method of toxicity of this protein was understood by researchers and by 1961 the US EPA registered the pesticide for commercial [...]

News: Mitigate Matrix Interference With New Isotopically Labeled Pesticide Residue Internal Standards From Restek

Any food safety chemist can attest that interference is a major concern when performing pesticide residue analysis. But with the release of its expanded line of internal and surrogate reference standards, Restek now offers enough options to mitigate interference in … Continue reading

Helium, Hydrogen, or Nitrogen—The Choice is Yours: Unique Rtx-CLPesticides Column Set Provides Optimal Results for Organochlorine Pesticides GC-Micro-ECD Analysis Using Any Carrier Gas

... that employ helium, such as organochlorine pesticides analysis following EPA Method 8081, conversion for organochlorine pesticides analysis by GC-ECD, their unique column selectivities provide optimal resolution...

ChromaBLOGraphy: Restek Gooseneck Splitless Liner with Semivolatiles Wool versus Vendor A MS Certified Liner for Pesticides by GC

We chemists are a funny lot.  We want GC-MS systems that will detect fg levels, so we spend tons of money on high resolution MS or MS/MS to get there and then we ignore the GC injector liner, a part that costs 10,000 times less than some instruments.  But as my colleagues Scott Grossman and [...]

Keep Your Instruments Up and Running with CarboPrep Plus SPE Cartridges

... of organochlorine pesticides in soil and water, the industry standard sample preparation product—activated Florisil . Florisil Cleanup for the Analysis of Organochlorine Pesticides by Electron Capture Detector ... Keep your organochlorine pesticides analysis GCs up and running by protecting them against matrix...

ChromaBLOGraphy: It’s the People at the Florida Pesticide Residue Workshop – Especially George and Wilma

If you’ve been following my blog posts about the Florida Pesticide Residue Workshop, you’ve seen that I’ve been writing about the people at the meeting, so far, my Restek colleagues.  And while it takes the efforts of a huge number of folks to pull off this meeting, none have been so important in the past [...]

ChromaBLOGraphy: Split Injection Minimizes Endrin and DDT Breakdown for GC-ECD Analysis of Organochlorine Pesticides

In my recent post, Fast Organochlorine Pesticide Analysis Using Hydrogen Carrier Gas with Split Injection GC-ECD, I asked readers to name one big Advantage I left unmentioned for doing split injection for organochlorine pesticide analysis ala EPA Method 8081.  I’m happy to say that Jason Hoisington of SGS quickly responded that split injection would minimize [...]

ChromaBLOGraphy: QuEChERS Extraction of Seafood — PAHs, Now PCBs and Organochlorine Pesticides

Previous posts on this subject noted good spike recoveries for PAHs at the 10 and 100 ng/g level from seafood, including scallops, shrimp, and oysters. The beauty of QuEChERS is its multiresidue extraction capability, so it was no trouble to report data for PCBs and organochlorine pesticides, in addition to the previously determined PAHs. That’s [...]

Rapid Screening Method for Carbamates in Orange Oil Using an Ultra Carbamate HPLC Column

.... Concern over the presence of pesticides in food products, particularly citrus, is growing, resulting ... EPA Method 531.1 addresses the analysis of carbamate pesticides in water, but not in more complex...

ChromaBLOGraphy: Pesticides are like Siblings – some get along well and some don’t – No. . .Really?

My colleague, Joe Konschnik and I have been asked by many food chemists out there about how much they can trust their pesticides mixes after they combine them into one single larger mixture for calibrating their instrument, or monitoring the accuracy and precision of their method – and rightfully so.  Well, like siblings, sometimes they […]

Speed Up and Simplify GC Method Development with the EZGC Online Software Suite (PDF 2054kB)

... pesticide kit (cat.# 32408) Diluent: Acetone Conc.: 100 ppm Injection Inj. Vol.: 1 μL split (split ratio...

Lowering Detection Limits for 1,4-Dioxane in Drinking Water Using Large Volume Injection in an Unmodified Splitless GC Inlet (PDF 722kB)

..., and organophosphorus pesticides. The CSR-LVSI technique we used is based on the work of application chemists at Thermo Scientific, who have successfully applied their CSR-LVSI technique to drugs-of-abuse, pesticides...

Maximize Your Profit Margins, Improve Your Data & Streamline Your Business: Establish a standing order for Restek reference standards (PDF 3906kB)

... significantly lowering your cost per ampul and maximize your profit margins. Consider a 10-compound PAH/pesticide...

Increase Sample Throughput with New 15-Minute, Low-Level PAH GC-MS Analysis (PDF 692kB)

..., organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons...

Restek Reference Standards (PDF 4407kB)

... (VOCs) • Pesticides • Polychlorinated biphenyls (PCBs) • Base, neutral & acid extractables (BNAs solvents • Pesticides • Fatty acid methyl esters (FAMEs) • QuEChERS • Derivatization reagents...

ChromaBLOGraphy: QuEChERS Acetonitrile Injections Still Problematic for Gas Chromatographers at the European Pesticide Residue Workshop

Acclaimed pesticide residue chemist Richard Fussell from the Food and Environmental Research Agency in the UK gave an excellent talk today at EPRW called “High Sensitivity GC-MS/MS: A Robust Technique for the Direct Analysis of Pesticides in QuEChERS Acetonitrile Extracts”.  One of the main themes of his talk was using more sensitive instrumentation to deal [...]

ChromaBLOGraphy: Fast Organochlorine Pesticide Analysis Using Hydrogen Carrier Gas with Split Injection GC-ECD

Fast Organochlorine Pesticide Analysis Using Hydrogen Carrier Gas with Split Injection GC-ECD The world is getting faster, but I’m moving slower, about everywhere except my GC, where hydrogen carrier gas keeps me speedy.  Take the organochlorine pesticides (OCPs) standard analyzed below with hydrogen carrier GC-ECD, which shows the 22 OCPs that are part of many [...]

ChromaBLOGraphy: You want them, I got them…a lot of them: pesticides GC-MS/MS transitions

I can tell you that determining transitions (SRMs) for GC-MS/MS can be quite challenging with so many precursor ions to evaluate. I spent a considerable amount of time optimizing transitions for our GC Multiresidue Pesticide Kit which has 203 compounds. That is a lot of transitions to evaluate! I also tested my chromatographic method for […]

News: Determining Pesticides in Dietary Supplements with QuEChERS Extraction, Cartridge SPE, and GCxGC-TOFMS

Author(s): Jack Cochran, Jason Thomas, Julie Kowalski, Michelle Misselwitz, Rick Lake Published By: Restek Corporation Year of Publication: 2012 Link: http://www.restek.com/Technical-Resources/Technical-Library/Foods-Flavors-Fragrances/GN_AN1338 Abstract: The novel approach used here combines QuEChERS extraction, cartridge SPE cleanup, and GCxGC-TOFMS analysis, resulting in good recoveries for a … Continue reading

News: Using Method Detection Limits to Set Mandatory Reporting Limits for Banned Pesticides: How a Public-Private Partnership Improved Cannabis Regulation in Colorado

Author(s): Joseph Konschnik1, Heather Krug2, Shawn Kassner3 1. Restek Corporation, 2. Colorado Department of Public Health & Environment (CDPHE), 3. Neptune and Company, Inc. Published By: Cannabis Science and Technology Issue: 1 Year of Publication: 2018 Link: www.cannabissciencetech.com/pesticides/using-method-detection-limits-set-mandatory-reporting-limits-banned-pesticides-how-public-private Abstract: The … Continue reading

ChromaBLOGraphy: Restek Vendor Seminar at Florida Pesticide Residue Workshop – Dietary Supplements and Flavor Tripping, aka Innovation and Fun

I’ve only worked at Restek just over 3 years, but I was a customer since the late 80s when I first met Paul Silvis, Joe Walsh, and Dave Shelow at the International Symposium on Capillary Chromatography.  As I interacted with Restek during my career, I noticed two important things about the company.  They liked to [...]

ChromaBLOGraphy: Calculating Splitless Valve Time for Splitless Injection GC with the New EZGC Method Translator and Flow Calculator – Pesticides

Properly setting the splitless valve time (SVT) for splitless injection in gas chromatography (GC) is probably one of the most overlooked optimization parameters for pesticide analysis today.  Having too short of a SVT leads to poor transfer of active and involatile pesticides, especially as the liner becomes contaminated with “dirt” from injected sample extracts.  This […]

ChromaBLOGraphy: Comprehensive Pesticide Screening Using QuEChERS, LC-MS/MS, and GCxGC-TOFMS at PittCon 2010

A recent collaboration with Applied Biosystems used a sensitive LC-MS/MS (4000 QTRAP) with a Restek Ultra Aqueous C18 column as the instrumental determination step for pesticides in QuEChERS extracts of red bell pepper, lemon, spinach, hazelnuts, raisins, and cucumber. Those same QuEChERS extracts were analyzed by a LECO Pegasus 4D GCxGC-TOFMS with Rxi-5Sil MS and [...]

News: Evaluation of QuECheRS, Cartridge SPE Cleanup, and Gas Chromatography Time-of-Flight Mass Spectrometry for the Analysis of Pesticides in Dietary Supplements

Author(s): Julie Kowalski, Michelle Misselwitz, Jason Thomas, Jack Cochran Published By: LCGC North America Year of Publication: 2010 Link: http://www.chromatographyonline.com/lcgc/Articles/Analysis-of-Pesticides-in-Dietary-Supplements/ArticleStandard/Article/detail/697436 Abstract: The FDA is responsible for regulation of dietary supplements as foodstuffs through the 1994 Dietary Supplement Health and Education … Continue reading

ChromaBLOGraphy: High Quality Analysis of Pesticides in Marijuana using QuEChERS, Cartridge SPE Cleanup, and GCxGC-TOFMS

Recently we reported on what we believe is the first application of QuEChERS for marijuana, using it for potency analysis with GCxGC-TOFMS.  Ultimately, the plan was to determine pesticides via the QuEChERS approach, combining it with cartridge SPE cleanup as we did for dietary supplements, since sample complexity would defeat the typical dispersive SPE cleanup [...]

News: Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants

Author(s): Michelle Misselwitz, Jack Cochran Published By: Restek Corporation Year of Publication: 2011 Link: http://www.restek.com/Technical-Resources/Technical-Library/Environmental/ev_an1331 Abstract: Concurrent solvent recondensation large volume splitless injection (CSR-LVSI) GC/MS is used here for analyzing pesticides and brominated flame retardants in drinking water based on EPA Method … Continue reading

Florisil SPE Extraction Blank

GC_EV1295

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Acephate Rxi-5Sil MS

GC_EV01036

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Aroclor PCBs on Rtx-CLPesticides

GC_EV00993-998

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Aroclor PCBs on Rtx-CLPesticides2

GC_EV00993A-998A

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Pesticides on Ultra Aqueous C18

LC_FF0490

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Pesticides on Ultra Aqueous C18

LC_FF0490A

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Pesticides on Ultra Aqueous C18

LC_FF0490B

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