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Rtx-200 Columns (fused silica)

midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane

...Rtx-200 columns have accomplished many difficult separations not possible on any other bonded compounds that phenyl, cyano, or Carbowax phases can not. The Rtx-200 column offers exceptional thermal ... rtx_brand, structure_gc_rtx-200.gif ... Rtx-200 Columns ... DB-200, DB-210, VF-200ms ... , glycols, and drugs of abuse. Excellent confirmation column with an Rtx-5 column for phenols, nitrosamines...

Rtx-200 Secondary Columns for GCxGC (fused silica)

midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane

...Rtx-200 columns have accomplished many difficult separations not possible on any other bonded that phenyl, cyano, or Carbowax phases can not. The Rtx-200 column offers exceptional thermal stability, low ... gc_x_gc_column_logo, gc_x_gc_column_disc, gc_x_gc_column_pkg, structure_gc_rtx-200.gif ... Rtx-200 Secondary Columns for GCxGC...

Rtx-200MSLow-Bleed GC-MS Columns (fused silica)

midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane

...Rtx-200 columns have accomplished many difficult separations not possible on any other bonded compounds that phenyl, cyano, or Carbowax phases can not. The Rtx-200 column offers exceptional thermal ... rtx_brand ... Rtx-200MS—Low-Bleed GC-MS Columns ... DB-210, DB-200, VF-200ms ... , glycols. Excellent confirmation column with an Rtx-5 column for phenols, nitrosamines, organochlorine...

GCxGC Selectivity Kit, 0.15 mm

..., Rtx-200, and Stabilwax column. Included...

GCxGC Selectivity Kit, 0.18 mm

..., Rtx-200, and Stabilwax column. Included...

GCxGC Selectivity Kit, 0.25 mm

..., Rtx-200, and Stabilwax column. Included...

MXT-200 Columns (Siltek-treated stainless steel)

midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane

...mxt_banded_4-5in_ph_so_gc, structure_gc_rtx-200.gif ... MXT-200 Columns ... 200-00-001.pdf ... , and glycols. Excellent confirmation column with an Rtx-5 column, for phenols, nitrosamines, organochlorine...

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

... 30 to 340/360 °C 13723 Rxi-17Sil MS 30 m 0.25 mm 0.25 μm 40 to 340/360 °C 14123 Rtx-200 30 m /360 °C 15123 Rtx-200 2 m 0.15 mm 0.15 μm -20 to 320/340 °C 15111 2 m 0.18 mm 0.18 μm -20...

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

... and Rtx-200 column combination distributes pesticides broadly in both dimensions, providing a highly 27 ND = no peak detected Figure 2: GCxGC-TOFMS and orthogonal Rxi-5Sil MS and Rtx-200 columns...

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

... Rxi-5Sil MS 30 m, 0.25 mm ID, 0.25 μm (cat.# 13623) Rtx-200 1.5 m, 0.18 mm ID, 0.20 μm (cat.# 45001 : 80 °C (hold 1 min) to 310 °C at 4 °C/min (hold 1.5 min) Rtx-200: 90 °C (hold 1 min) to 320 °C at 4...

Two Options for Analyzing Potential Genotoxic Impurities in Active Pharmaceutical Ingredients

... and alkyl halides on the Rtx-200 column. Compounds that are used in the synthesis is a comprehensive method for the analysis of both sulfonate esters and alkyl halides on the Rtx-200 column. Both ... esters and alkyl halides on the Rtx-200 column. Both methods require very little sample preparation ... PGI, sulfonate ester, potential genotoxic impurities, rtx-200, API, Rxi-5Sil MS...

Rxi GC Columns Sales Sheet (PDF 3173kB)

... Pesticides, nitroaromatics, halogenated compounds Rxi-1ms Nonpolar Rtx-200 Midpolar, electronegative selectivity Pesticides, nitroaromatics, halogenated compounds Rxi-5Sil MS Nonpolar Rtx-200 Midpolar...

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

...QuEChERS,cSPE,and GCxGC-TOFMS with an Rxi-5Sil MS xRtx-200 column combination to quantify pesticides in dietary MS column (cat.# 13623) connected to a 1.5 m x 0.18 mm x 0.20 µm Rtx-200 column (cut from a10 m...

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

... and connected via a press-fit (BGB Analytik AG, cat. # 2525LD) to a 1.3 m x 0.25 mm x 0.25 μm Rtx-200 column , a nonpolar Rxi-5Sil MS column for the first dimension and a more polar selective Rtx-200 column...

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)

....5 m x 0.18 mm x 0.20 μm Rtx-200 column (piece cut from cat.# 45001) for the second dimension -axis corresponds to the retention time scale of the Rtx-200 secondary column, and intensity data is depicted...

ChromaBLOGraphy: GCxGC-FID of a Petroleum Diesel and Biodiesel Blend: Rtx-200 x Rxi-17Sil MS and Rxi-5ms x Rxi-17Sil MS

One of the benefits of going to the 8th GCxGC Symposium and 35th International Symposium on Capillary Chromatography is that you not only get to hear presentations by experts like Professor John Seeley of Oakland University, but you also get to interact with those same experts outside of the talks, which is a great learning [...]

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

... Pesticides, Herbicides Rtx-200 Drugs Rtx-35 Drugs, Pesticides, Herbicides, Polychlorinated Biphenyls (PCBs Restek’s Pro EZGC chromatogram simulator. Column Rtx-440, 30 m, 0.25 mm ID, 0.25 μm (cat.# 12923...

Rxi-5Sil MS Columns: Assured Performance for Forensic Applications (PDF 3420kB)

... on a fluorinated phase (e.g. Rtx-200), but the selectivity of the Rxi-5Sil MS column provides complete separation : 3.5 mm splitless taper w/wool (cat.# 22286-200.1); Inj. Temp.: 250 °C; Purge Flow: 28 mL/min; Oven...

ChromaBLOGraphy: Multiply Your Separation Power with GCxGC and Selective Columns

An elegant way to solve complex separation problems is comprehensive two-dimensional GC (GCxGC). GCxGC increases peak capacity with two independent separations in one analysis. GCxGC uses a serial configuration of orthogonal stationary phases separated by a thermal modulator. A separation is performed on the first column, and effluent from the first column is repeatedly/quickly focused [...]

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

.... An Rxi®-5Sil MS and Rtx®-200 column combination distributes pesticides :  GCxGC-TOFMS and orthogonal Rxi®-5Sil MS and Rtx®-200 columns allow...

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 [...]

Restek Advantage, 2012.1 (PDF 14846kB)

..., simple QuEChERS extraction for a broad range of pesticides. • Rxi-5Sil MS and Rtx-200 column selectivity in multidimensional techniques and the Rxi-5Sil MS (cat.# 13623) x Rtx-200 (cat.# 45001) column combination used...

ChromaBLOGraphy: How to choose the correct GC column – Part 2

My last post looked at how to use published boiling points of compounds to help select a GC column. In this post, I will be discussing the role of compound polarity when selecting a GC column.   To briefly summarize my column selection process (discussed in Part 1 http://blog.restek.com/?p=5426 )   My four categories of [...]

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

... the application of QuEChERS, cSPE, and GCxGC-TOFMS with an Rxi-5Sil MS x Rtx-200 column combination to quantify .# 13623) connected to a 1.5 m x 0.18 mm x 0.20 μm Rtx-200 column (cut from a 10 m column...

ChromaBLOGraphy: Mining through complex data and non-target analysis is made easier with GCxGC-TOFMS

I am currently working on a project looking for pesticides in herbal tea.  At this point, I am using the contents of one tea bag (~1.5g) and 10mL of freshly boiled water with a QuEChERS extraction.  I am still working through the details on the impact of the hot water and what type of cleanup [...]

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: World Record Set for Longest Gas Chromatography Retention Time!

My colleague Jaap de Zeeuw holds a Guinness World Record certificate for making and applying the longest GC column ever, 1300m.  That’s quite a feat and I’ve often wondered what the retention times were for that column when you consider the holdup time was probably on the order of hours instead of minutes.  No matter […]

How to Condition a New Capillary GC Column

...-1701, MXT-Volatiles Rtx-20, Rtx-35, Rtx-35 Amine, Rtx-50, Rtx-65, Rtx-65TG, Rtx-200, Rtx-200 . For these columns: MXT-1, MXT-1HT, MXT-1 SimDist, MXT-2887, MXT-500, MXT-Biodiesel TG Rtx-1...

Optimizing the Analysis of Volatile Organic Compounds (PDF 2705kB)

..., realistically, the material performs best when kept below 200°C. Samples that contain organic acids can degrade consistency do not use traps containing this adsorbent at temperatures above 200°C. Silica Gel (surface area...

Comprehensive 2D Gas Chromatography — Making GC Separations Work Harder

..., with 1m removed) Rtx-200 1m, 0.18mm ID, 0.20µm (1m of 10m column, cat.# 45001 . Columns: Rtx-5 9m, 0.18mm ID, 0.20µm (10m column, cat.# 40201...

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

.... # 2525LD) to a 1.3 m x 0.25 mm x 0.25 µm Rtx-200 column (Restek dimension and a more polar selective Rtx-200 column for the second dimension. The chemically diverse group...

Will Pro EZGC Chromatography Modeling Software Work For You? We Put It to the Test!

... Rtx-200 Drugs Rtx-35 Drugs Biphenyls (PCBs) Rtx-1 Solvents, Flavors & Fragrances...

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

... dimension and a 1.5 m x 0.18 mm x 0.20 µm Rtx-200 column (piece cut from scale of the Rtx-200 secondary column, and intensity data is depicted by color with red being the most...

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GCxGC-TOFMS Contour Plot of Unfortified Detoxification Tea

GC_FS0503

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Solvent Mixture #1 on Rtx-200

GC_CH00336

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Solvent Mixture #2 on Rtx-200

GC_CH00339

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Solvent Mixture #3 on Rtx-200

GC_CH00342

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Silanes on Rtx-200

GC_CH00361

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Siloxane (Polymethyl) on Rtx-200

GC_CH00360

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Silanes on Rtx-200

GC_CH00362

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Glycols on Rtx-200

GC_CH00326

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Chlorofluorocarbons on Rtx-200

GC_CH00322

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Explosives Rtx-200

GC_EV00060

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Glycols on Rtx-200

GC_EV00445

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Fatty Acids (Free) on Rtx-200

GC_CH00282

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