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Petroleum & Petrochemical Standards > Sulfur Standards

Browse our complete line of Sulfur Standards

Sulfur Simulated Distillation Standard (SSDS)

...30 ppm total sulfur by weight from ethanethiol60 ppm total sulfur by weight from 1 -propanethiol30 ppm total sulfur by weight from 1-butanethiol60 ppm total sulfur by weight from 1 ... Sulfur Simulated Distillation Standard (SSDS) ... Reference Standards , Petroleum & Petrochemical , Sulfur Standards...

Speciated Sulfur System Suitability Checkout Standard (SSSSCS)

...0.50 ppm total sulfur by weight from dimethylsulfide35.0 ppm total sulfur by weight from tertiary butyl mercaptan50.0 ppm total sulfur by weight from thiopene15.0 ppm total sulfur ... Speciated Sulfur System Suitability Checkout Standard (SSSSCS) ... Reference Standards , Petroleum & Petrochemical , Sulfur Standards...

Sulfur 5-Component Mix (5 components)

...Sulfur 5-Component Mix...

Rt-XLSulfur Columns (packed & micropacked)

...Sulfur analyses are traditionally performed using PTFE tubing to improve column inertness from sulfur compounds. The interior wall and the end fittings of the Rt-XLSulfur column are Sulfinert ... on analyzing sulfur compounds.Click here for more information on our packed GC ... Optimized columns for low ppbv sulfur analyses. Eliminate the need for PTFE...

Granulated Activated Copper (Bulk Adsorbent)

...Activated copper effectively removes elemental sulfur from environmental extracts. Our acid ... Convenient form for removing sulfur from environmental extracts. Acidified...

Sulfinert-Treated Regulators (Dual Stage & Single Stage)

.... This proprietary passivation process provides excellent inertness for sulfur and mercury calibration standards and petrochemical plants, and refineries to obtain accurate sulfur and mercury data the first time, every time ... and gas emission standards. Low-level sulfur and mercury analysis. Reactive...

SilcoCan Air Sampling Canisters with RAVE Valve

...-15, or reactive sulfur compounds, SilcoCan canisters are your best choice for inertness. In Tedlar bags, the stability of low-level (100 ppbv) sulfur volatile organic compounds (VOCs) is poor, even ... inertness, even for sulfur-containing or brominated compounds. High-quality, metal-to-metal seal...

Gas Sampling Valves (Sulfinert Treated)

1/16" Fittings, 0.40 mm Port Diameter; "W Type" Valve

...Ideal for samples containing low concentrations of sulfur or other active compounds...

Rtx-1 Columns (fused silica)

nonpolar phase; Crossbond dimethyl polysiloxane

..., and trace-level sulfur compounds. ... ), simulated distillation, arson accelerants, gases, natural gas odorants, sulfur compounds, essential oils...

CLP GPC Calibration Mix (5 components)

.../mLMethoxychlor (72-43-5), 2.0 mg/mLPerylene (198-55-0), 0.2 mg/mLSulfur (7704-34-9), 0.8 mg/mL...

Revised GPC Calibration Mix (5 components)

.../mLMethoxychlor (72-43-5), 1.0 mg/mLPerylene (198-55-0), 0.2 mg/mLSulfur (7704-34-9), 0.8 mg/mL...

Coiled Electropolished 316L Grade Stainless Steel Tubing (Treated)

...—A required treatment for metal components when analyzing for parts-per-billion levels of organo-sulfur...

Gas Sample Loops (Sulfinert Treated)

1/16" fittings for "W Type" valves

... Ideal for samples containing low concentrations of sulfur or other active compounds...

Straight Seamless 316L Grade Stainless Steel Tubing (Treated)

... when analyzing for parts-per-billion levels of organo-sulfur compounds.Silcosteel...

Sample Cylinders, High Pressure (Stainless Steel & Sulfinert Treated)

...:Stable Sulfur and Mercury Sampling in Refineries...

Sample Cylinders, Ultra-High Pressure (Stainless Steel & Sulfinert Treated)

...:Stable Sulfur and Mercury Sampling in Refineries...

MXT-1 Columns (Siltek-treated stainless steel)

nonpolar phase; Crossbond dimethyl polysiloxane

...), gases, natural gas odorants, sulfur compounds, essential oils, hydrocarbons, semivolatiles, pesticides...

Coiled Welded/Drawn 304 Grade Stainless Steel Tubing (Sulfinert Treated)

... treatment for metal components when analyzing for parts-per-billion levels of organo-sulfur compounds. ...

Coiled 316L Grade Stainless Steel Tubing (Treated)

... for parts-per-billion levels of organo-sulfur compounds.Silcosteel...

ALTEF Gas Sampling Bags

.... Very low VOC and sulfur background compared to Tedlar bags. Not recommended for ketones...

Rxi-1ms Columns (fused silica)

nonpolar phase; Crossbond dimethyl polysiloxane

..., pesticides, PCB congeners (e.g., Aroclor mixes), sulfur compounds, amines, solvent impurities, simulated...

Passive Air Sampling KitsIntegrated (Stainless Steel & Siltek Treated)

Superior Performancean Excellent Restek Value

... SilcoCan air sampling canister when collecting low-level volatile sulfur compounds or other active...

Alicat M-Series Flow Calibrators

..., neon, nitrogen, nitrous oxide, oxygen, propane, sulfur hexafluoride, xenon, A-25, A-75, A1025, C-2, C-8...

Replacement CO2, Sulfur, Moisture Filter

...Replacement CO2, Sulfur, Moisture Filter...

Super Clean Gas Filter Kit

...2, Sulfur, Moisture Filter, Baseplate with 1 ... Super Clean Gas Filter Kit, Contains Replacement CO2, Sulfur, Moisture Filter, Baseplate with 1 ... Replacement CO2, Sulfur, Moisture Filter, Baseplate with 1...

Rt-XLSulfur Packed GC Column for Analysis of Low-Level Sulfur Compounds in C1-C6 Hydrocarbon Streams (PDF 536kB)

...Petrochemical Applications Rt-XLSulfur Packed GC Column for Analysis of Low-Level Sulfur Compounds in C1-C6 Hydrocarbon Streams The analysis of sulfur compounds in C1-C6 hydrocarbon streams by gas...

Analyze Sulfur Compounds at ppb Levels Using an Rt-XLSulfur Micropacked Column or an Rtx-1 Thick Film Capillary Column (PDF 483kB)

...Petrochemical Applications Analyze ppb Level Sulfur Compounds Using an Rt-XLSulfur Micropacked GC Column or an Rtx-1 Thick Film Capillary GC Column Sulfur compounds in petroleum streams can have...

Rt-XLSulfur Packed Column: Specialized packed and micropacked columns for eXtra-Low Sulfur analysis (PDF 331kB)

...Rt-XLSulfur Packed Column Specialized packed and micropacked columns for eXtra-Low Sulfur analysis Restek’s Rt-XLSulfur column is the second generation of packing material for the analysis of sulfur...

Protect Natural Gas Sample Integrity and Prevent Sulfur Loss with Sulfinert Sample Cylinders (PDF 612kB)

...Petroleum & Petrochemical Applications Protect Natural Gas Sample Integrity and Prevent Sulfur , Petrochemical Market Development Manager Determining the sulfur content of natural gas is critical as sulfur...

Protect Natural Gas Sample Integrity and Prevent Sulfur Loss with Sulfinert Sample Cylinders (PDF 612kB)

...Petroleum & Petrochemical Applications Protect Natural Gas Sample Integrity and Prevent Sulfur , Petrochemical Market Development Manager Determining the sulfur content of natural gas is critical as sulfur...

Solvent Compatibility Chart for Syringe Filters (PDF 360kB)

...% Nitric concentrated Phosphoric 25% Sulfuric 25% Sulfuric 6N, 29% Sulfuric concentrated...

Stable Sulfur & Mercury Sampling in Refineries Using Siltek and Sulfinert Surface Treated Components

... Reliably sample sulfur and mercury compounds at ppb levels. Reduce lab costs . Refinery and natural gas samples often contain trace amounts of sulfur- and mercury-containing compounds ... Refinery and natural gas samples often contain trace amounts of sulfur- and mercury ... sulfur, mercury, passivation, siltek, sulfinert, stability...

Rt-XLSulfur Packed GC Column for Analysis of Low-Level Sulfur Compounds in C1-C6 Hydrocarbon Streams

...The analysis of sulfur compounds in C1-C6 hydrocarbon streams by gas chromatography (GC ) is an important application in the petrochemical field. The presence of sulfur compounds in petroleum products can ... Rt-XLSulfur columns resolve hydrocarbons from sulfur compounds in hydrocarbon process streams and exhibit excellent inertness with low ppbv levels of sulfurs. ...

GC Analysis of Total Reduced Sulfurs at ppbv Levels Using an Rxi-1ms Column and Sulfur Chemiluminescence Detection

... Reliable results for ppbv concentrations of highly active sulfur compounds . Inert, low bleed column resolves all analytes. Column compatible with SCD and other sulfur ... Ultra-low bleed and exceptional inertness assure complete separation of sulfur compounds (hydrogen ... chemiluminescence, dimethyl sulfide, mercaptans, sulfur, inertness, hydrogen sulfide...

Sulfinert-Treated Sample Cylinders Store Active Sulfur Compounds at ppb Levels

... Stable storage of sulfur compounds at ppb levels. D.O.T. rated to 1800psi . Refinery and natural gas samples often contain trace amounts of sulfur-containing compounds which can ... exceeded 90%. A Sulfinert-treated sampling/transfer system can assure accurate sulfur content data ... , natural gas, beverage-grade, carbon dioxide, sulfinert, sulfur...

Using a Methanizer for CO and CO2 Analysis at Low Levels (PDF 456kB)

... Sulfide (H2S), Sulfur Hexafluoride (SF6), and Other Sulfur-Containing Gases Very small amounts of H2S, SF 6—and probably other sulfur-containing gases—cause immediate, complete deactivation of the catalyst...

Sulfinert-Treated Sample Cylinders Assembly & Maintenance Guidelines (PDF 415kB)

... provides stable storage of sulfur and mercury at ppb levels in petroleum samples. • Inert coating doesn contain trace amounts of sulfur-containing compounds, which can interfere with reactions or poison...

ChromaBLOGraphy: Two Detector Solution to Analyzing Sulfur

Dan Li, Katarina Oden, Chris English, and Jason Herrington Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful […]

Protect Natural Gas Sample Integrity and Prevent Sulfur Loss with Sulfinert Sample Cylinders

...Determining the sulfur content of natural gas is critical as sulfur containing compounds can . Accurate analysis of sulfur compounds in refinery feedstocks, process plant streams, and gas fuels ... Sulfur compounds in fuel streams can damage equipment and reduce BTU values. Sulfinert sample...

Analyze ppb Level Sulfur Compounds Using an Rt-XLSulfur Micropacked GC Column or an Rtx-1 Thick Film Capillary GC Column

...Sulfur compounds in petroleum streams can have detrimental effects on the performance with sulfur compounds is of significant environmental importance. In short, to protect both processing ... Trace levels of sulfur compounds are separated and quantified by using an Rtx-1 capillary column...

ShinCarbon ST Micropacked GC Columns: Above-Ambient Analyses of Permanent Gases and Light Hydrocarbons (PDF 342kB)

... analyses of sulfur dioxide and Freon fluorocarbons (Figure 4).* *For analysis of other low molecular weight sulfur compounds, we recommend Rt-XLSulfur micropacked and packed columns or Rtx-1 capillary...

ChromaBLOGraphy: Maximum temperatures of packed columns – Sulfur Gases

For my fifth and final post in this series, I would like to focus on packed columns for light sulfur gases.  Compounds include (but not limited to) hydrogen sulfide, sulfur hexafluoride, carbonyl sulfide, sulfur dioxide, methyl mercaptan, ethyl mercaptan, etc. Because some analysts prefer PTFE tubing and/or PTFE frits for their columns, the maximum temperature […]

Versatile GHB Method For Headspace or Liquid Injection (PDF 1100kB)

...Trimethylsilyl (TMS) derivatization of GHB. Figure 2Sulfuric acid conversion of GHB to GBL. Note that GBL can sulfuric acid.4.Vortex and allow tubes to sit 5 minutes.Add 5mL methylene chloride to each tube...

Gas Sampling Bags: Cost-Effective Alternatives for Air Sampling (PDF 2349kB)

... monoxide, sulfur dioxide, hydrogen sulfide, radon, and mercaptans. • Suitable for sampling most VOCs and many sulfur compounds. • Low VOC background. • Does not exhibit background levels...

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

... Sulfur and Lipid Contaminants: Gel Permeation Chromatography Polar Contaminants and Co -Extractants: Adsorbent SPE Tubes Double-Bond, Triple-Bond, or Aromatic Compound Contamination: Sulfuric Acid Cleanup...

GCxGC Analysis of Complex Petroleum Hydrocarbons: Sulfur Speciation in Diesel

... of complex petro fractions such as naphtha, gasoline, and diesel. Sulfur Speciation in Diesel The analysis of sulfurs, such as dibenzothiophenes, in diesel offers a timely example of the benefits of GCx...

ChromaBLOGraphy: Selecting the best column for Speciation of Sulfur Compounds in Natural Gas

Last Pittcon conference, a poster was presented based on some recent  work done by Rick Morehead from our applications laboratory in Restek Bellefonte. The focus was sulfur speciation in natural gas, Sulfur gases were tested up to tetrahydrothiopene. Natural gas is a complex mixture of low molecular weight hydrocarbons, inert gases and other impurities including [...]

News: Analysis of Gases via Gas Chromatography: Part 2: Sulfur Gases

Author: Jaap de Zeeuw Restek Corporation Published By:  J. Sep. Sci. Year of Publication: 2016 Link: http://www.sepscience.com/Bespoke-Products-List?pgid=115&artid=4442 Abstract: Sulfur components are widely present in many raw materials used for hydrocarbon processing. The sulfur components are undesirable because they have a strong smell, … Continue reading

News: GCxGC Analysis of Complex Petroleum Hydrocarbons: Sulfur Speciation in Diesel

Author(s): Jack Cochran, Jan Pijpelink Published By: Petro Industry News Year of Publication: 2011 Link: http://www.restek.com/Technical-Resources/Technical-Library/Petroleum-Petrochemical/petro_pin072011 Abstract: Analysis of sulfurs in diesel provides a good demonstration of the power of GCxGC for complex petro matrices. Increased peak capacity allows identification of sulfur … Continue reading

Solutions for Gas Sampling (PDF 2133kB)

... no exposure to bases or abrasives. Sulfur compounds are stable in Sulfinert-treated stainless steel systems sampling in refineries & petrochemical plants Analyzing sulfur or mercury? • Sulfinert coating provides...

Sampling Volatile Organic Compounds in Air Restek Sampling Equipment Helps Assure Accurate Data

.... For reactive compounds, such as sulfur-containing components, a SilcoCan canister is your best canister choice and maximum sample stability, even for low level sulfur compounds. Products ... ). For reactive compounds, such as sulfur-containing components, SilcoCan canisters are your best choice , even for 1-20ppb sulfur compounds. ...

ChromaBLOGraphy: [14] What do Chromatograms tell us? Base line disturbance using Selective Sulfur Detection

Chromatograms are like fingerprints.  If you can “read” chromatograms well, you often can find a plausible cause. In this series, we will show a series of GC-chromatograms that are obtained from users and discuss some potential causes for the phenomena. Then we can move into some solutions for improvement.   When running your analysis, sometimes [...]

ChromaBLOGraphy: [14] What do Chromatograms tell us? Base line disturbance using Selective Sulfur Detection

Chromatograms are like fingerprints.  If you can “read” chromatograms well, you often can find a plausible cause. In this series, we will show a series of GC-chromatograms that are obtained from users and discuss some potential causes for the phenomena. Then we can move into some solutions for improvement.   When running your analysis, sometimes [...]

Solvent Compatibility Chart for Filter Vials (PDF 304kB)

... surfactant/detergent Sodium Hydroxide, 3N caustic Sodium Hydroxide (concentrated) caustic Sulfuric Acid...

Barbiturate Analysis (PDF 21kB)

... at position 2 with sulfur results in the formation of thiobarbiturates. Barbiturates can be ranked according...

ASTM Petrochemical Method Chromatography Product Guide (PDF 1598kB)

..._PC1268 GC_PC1270 GC_PC1269 Impurities Sulfur Method # Method Title Restek Column(s) Restek Reference Standard(s) Chromatogram# D6228 Standard Test Method for Determination of Sulfur Compounds in Natural Gas...

GC Capillary Columns 101 Infographic (PDF 1706kB)

... For Hydrocarbons Semivolatiles Sulfur compounds Crude oils General-purpose columns work for a lot of analyses...

Excellent LC-MS Separation of Penicillins and Cephalosporins Using Ultra IBD Columns (PDF 759kB)

... of antibiotics worldwide. These antibiotics possess a sulfur atom within a five- or six-membered ring, attached...

ChromaBLOGraphy: Capillary GC Column Killers – Part 3

Elemental Sulfur Part 3 of my installment of Capillary GC Column Killers includes a compound known to just about everyone, sulfur. Either analysts have been aware for years that this compound has been in their samples/extracts, or they are surprised when they eventually find out that this compound has been causing their poor chromatography. Many [...]

SilcoCan Canister with RAVE Valve Instruction Sheet (PDF 698kB)

... and heat above 80 °C may damage the fused silica surface, resulting in reduced recoveries of sulfur...

Guide to Whole Air Canister Sampling (PDF 1472kB)

..., such as sulfur-containing compounds. Thus, surface inertness for SilcoCan canisters exceeds that for SUMMA above 80 °C may damage the fused silica surface, resulting in reduced recoveries of sulfur and other...

Thomson SINGLE StEP Filter Vials (PDF 738kB)

...) caustic Sulfuric Acid (concentrated) acid, inorganic TCA (aqueous solution) acid, organic...

Rapid, Simple 4.5-Minute Pyrrolizidine Alkaloids Analysis by LC-MS/MS (PDF 1056kB)

... and validated by the German Federal Institute for Risk Assessment (BfR) [1]. It employs a sulfuric acid...

The RAVE Family of Air Sampling Valves: Excellence is Our Standard (PDF 3402kB)

... for sulfur-containing or brominated compounds. SUMMA canister equivalent features proprietary for low-level reactive sulfur (5–20 ppb), TO-14A, or TO-15 compounds Description 1 L Volume cat.# 3 L...

Assure Accurate Sampling and Reliable Sample Purity Restek Sampling System Treatments Prevent Adsorption, Protect Components

... Quantify active compounds (e.g., sulfur, mercury, NOx) at parts-per-billion levels 1 shows uptake and release curves for 500ppbv of methyl mercaptan, an active sulfur compound ... to cylinders, valves, fittings, tubing and more, and demonstrably improve detection of low-level sulfur, nitric...

Gas Management Supplies for GC Labs (PDF 5122kB)

..., 1/4" Brass Includes: Replacement CO2, Sulfur, Moisture Filter, Baseplate with 1/4" Brass Fittings kit 23844 Super Clean Gas Filter Kit, 1/8" Brass Includes: Replacement CO2, Sulfur, Moisture Filter...

Using Micropacked GC Columns for Analyzing Volatiles in Light Hydrocarbon Streams

... for petrochemical testing. The Rt-XLSulfur is a unique packing designed for ppb level sulfur analysis. This porous stability up to 300 °C. The overlaid sulfur and hydrocarbon chromatograms in Figure 3 show a highly...

Using a Methanizer for CO and CO2 Analysis at Low Levels

...: Hydrogen Sulfide (H2S), Sulfur Hexafluoride (SF6), and Other Sulfur-Containing Gases Very small amounts of H2S, SF6—and probably other sulfur-containing gases...

Airmail, vol. 2014 vol. 1 (PDF 608kB)

... using humidified air and heat at 80 °C and 125 °C have shown reduced recoveries of sulfur compounds...

Using Micropacked Columns

... for analyses of gas mixes, including sulfur compounds or light hydrocarbons, in which the use of a packed ... useful for analyses of gas mixes, including sulfur compounds or light hydrocarbons, for which a packed...

Restek Reference Standards (PDF 4407kB)

... (SimDist) • Detailed hydrocarbon analysis (DHA) • Sulfur  For targeted help in your specific area...

ChromaBLOGraphy: Characterization of crude oils

Following Chris’s blog on glycol analysis, in this case its pretty clear this time what the source of the oil is. There are several ways to find the origin of crudes. One can take the sulfur, hydrocarbon or the biomarker distribution. These distributions are like a fingerprint for a certain oil source. For the biomarkers [...]

Guide to Preparing and Analyzing Semivolatile Organic Compounds (PDF 6275kB)

.../neutral. Then adjust the water sample to a pH of slightly less than 2 using sulfuric acid (1:1, v/v). Avoid over . For these reasons many laboratories choose not to use GPC. However, it is very efficient for removing sulfur, high...

1-Type Column

1-Type Column

ChromaBLOGraphy: Can Column Bleed also be a “Good” Thing?

We see all kind of developments in GC technology to stabilize stationary phases and to make GC columns that bleed as low as possible. A question I asked myself: Is it really always advantageous to have low bleed? I sure understand that low bleed will get us highest signal-to-noise.  And if we combine that with [...]

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

.... Environmental samples often contain high molecular weight hydrocarbons, sulfur compounds, and phthalate esters techniques, such as sulfur removal using activated copper and gel permeation chromatography (GPC) may...

Restek Essentials: Featured Chromatography Products 2019.2 (PDF 5798kB)

..., and sulfur analyses by ASTM methods, visit www.restek.com/ASTMguide Featured Topaz Liners: Shimadzu Split...

Raptor Biphenyl LC Columns Brochure (PDF 6071kB)

....restek.com/raptor Fast Analysis of Sulfur Antibiotics without Coelutions Even with high-efficiency UHPLC particles, C18...

ChromaBLOGraphy: Looking for a Cryogenic Valve for your Shimadzu GC-MS?

I was working on a project for volatile sulfur analysis. It took so long to cool the GC oven to 30 °C, and yet the most volatile analytes were still difficult to separate. At that time, I realized that I needed a cryogenic cooling system for my Shimadzu GC-MS QP2010 plus! However, I was not as excited as […]

ChromaBLOGraphy: Capillary GC Column Killers – Part 1

Most analysts already know that at elevated temperatures, oxygen damages the stationary phase inside a capillary gas chromatography column, and so does operating a column above the recommended maximum temperature. However, there are also several lesser known capillary column killers including the pH of the sample, derivatizing reagents, samples containing elemental sulfur, and aqueous (water) [...]

ChromaBLOGraphy: GC columns – when one is not enough

Often we get asked for a column recommendation for a complex GC analysis.   This is especially true for gas analysis.  Probably the most common request is for separation of fixed (permanent) gases (like O2, N2, CO, CO2, N2O, etc…) plus separation of larger (higher-boiling point) compounds (light hydrocarbons, moisture, sulfur compounds, etc.).  Unfortunately, there is […]

Rapid Characterization of Garlic Volatiles—No Sample Prep Required! Using Headspace GC/MS and an Rxi-5ms Capillary Column

.... Results Several sulfur components were identified including allyl methylsulfide, 3 of low levels of sulfur containing compounds from odorless supplements...

radiello Instruction Manual (PDF 4923kB)

...) thermally desorbed E1 nitrogen and sulfur dioxides (NO2 and SO2) F1 ozone (O3) G1 hydrogen sulfide (H2S sulfur dioxide, A8, F1 supporting plate, A5 Tenax TA, M1 tetrachloroethylene, D2, D6, E3...

Rxi GC Columns Sales Sheet (PDF 3173kB)

..., essential oils, hydrocarbons, pesticides, PCB congeners (e.g., Aroclor mixes), sulfur compounds, amines...

Restek Methanizer for Agilent GCs Instruction/Operation Manual (PDF 5267kB)

....0 (Installation Guide). 10.0 Cautions 10.1 Even small amounts of sulfur compounds can poison the nickel catalyst , and a poisoned catalyst must be replaced as it cannot be regenerated. If sulfur compounds are present...

Restek Methanizer for Thermo TRACE 1300/1310 GCs (PDF 5073kB)

... the directions in section 5.0 (Installation Guide). 10.0 Cautions 10.1 Even small amounts of sulfur compounds . If sulfur compounds are present in a sample, the catalyst should be bypassed using a switching valve...

Fast Screening and Confirmation of Gamma-Hydroxybutyrate (GHB) in Urine

...) as an internal standard. GHB is converted to GBL with sulfuric acid, eliminating the need for derivatization 150µL concentrated sulfuric acid only to tubes used for analysis of total GHB. Vortex...

Early Detection of Structural Mold with SilcoCan Air Sampling Canisters

..., aldehydes, aromatic and chlorinated hydrocarbons, sulfur-based compounds, and amines. These compounds and TO-15, including sulfur-containing compounds and microbial VOCs. Here we show a successful...

Frequently Asked Questions: Surface Treatments

... in environments containing hydrochloric, nitric, or sulfuric acid. Sulfinert A required treatment for metal components used in analyzing for parts-per-billion levels of organo-sulfur compounds...

ChromaBLOGraphy: BP Gulf Spill: Mississippi Canyon Block 252 Crude Oil Analysis

Description of BP Gulf Oil Spill Crude MC 252 from the Mississippi Canyon Block 252 Macondo Prospect. Using Restek Rxi-5HT with Cool-on-column technique for light sweet crude oil also known as Louisiana Light Sweet Crude with some asphaltenes and solids.

ChromaBLOGraphy: BP Spill in the Gulf of Mexico: Analysis of the Dispersants Nalco Corexit (EC9527A & EC9500A).

As of May 23rd BP has used 715,000 gallons of Corexit. During a 5 month period following the failed blowout preventer at the IXTOC-1 well in 1979 between 1 & 2.5 million gallons of mostly Corexit were applied to the largest accidental oil spill in history. BP has nearly 250,000 gallons of these dispersants on [...]

Solvent Compatibility Chart

... Sulfonitric acid, 100% B/3/4 Sulfur dioxide B/4 Sulfuric acid, 100% B/4...

ChromaBLOGraphy: When NOT to use (GC) Mass Spec

We often get asked in tech service for a column recommendation for a specific analysis, but before we provide an answer, we ask what GC detector is going to be used. This is important to know because certain dimension columns work better with certain detectors. I tried to elaborate on this topic in one of [...]

Analysis of Nicotine and Impurities in Electronic Cigarette Solutions and Vapor (PDF 862kB)

....227 100 x Red 5. Sulfur dioxide 1.313 90 x Red 6. Chloromethane 1.380 100 x Red 7. Water 1.453 100 x x...

ASTM Petrochemical Method Chromatography Product Guide

... Sulfur Method # Method of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and Flame Photometric Detection...

Featured Application: Pyrrolizidine Alkaloids on Raptor ARC-18 Rapid, Simple 4.5-Minute Pyrrolizidine Alkaloids Analysis by LC-MS/MS

... Institute for Risk Assessment (BfR) [1]. It employs a sulfuric acid digestion, an SPE C18 cleanup...

ChromaBLOGraphy: Limitations of Alumina: What you should NOT inject on alumina / Al2O3 columns

Alumina (Al2O3) capillary PLOT columns have been available for about 35 years. They are best suited for separation of C1-C10 hydrocarbons and especially the C1-C5 range. The alumina has unique selectivity making it possible to separate all the unsaturated hydrocarbons at temperatures above ambient, see figure 1. While its an excellent choice for unsaturated hydrocarbons, special attention is […]

Analyze Biodiesel Oil for Glycerin Using Restek's Robust Rtx-Biodiesel Capillary GC Column

..., and contains no aromatics, and the absence of sulfur from B100 precludes sulfur dioxide emissions. The "B...

ChromaBLOGraphy: Catching a Comet Traveling at 40,000 Miles per Hour

In 1993 the International Rosetta Mission was approved and over the next 21 years an estimated 1 billion Euros was invested in an audacious plan to catch a comet. On March 3rd, 2004 a European Ariane 5 rocket propelled the Rosetta on a ten year mission to orbit a comet.  While there have been 6 […]

ChromaBLOGraphy: A little extra information for installing/conditioning a new packed/micropacked column

Even though we include instruction sheets with most of our packed/micropacked columns which contain enough information for most customers, some customers (many who are new to using packed columns) contact us routinely asking for some additional assistance. As a result, I decided to add some additional information to our current instruction sheets hoping it helps those […]

High Temp. Stability Problem Solved with New Metal Columns Analysis of Total Glycerides in Biodiesel Oils by ASTM D-6584 Using New MXT-Biodiesel TG Capillary Columns

.... Biodiesel oil is biodegradable, nontoxic, does not contain aromatics, and the absence of sulfur from B100 precludes sulfur dioxide emissions. The "B" number designates the percentage of biodiesel in a biodiesel...

ChromaBLOGraphy: Two for the Price of One? Using CPP to Simultaneously Clean Pesticide and PCB Extracts

In a recently published blog, we introduced the advantages of cleaning EPA Method 8081 extracts using CarboPrep Plus (CPP) as a replacement.  The sample preparation for PCBs by EPA Method 8082 is commonly combined with the pesticides EPA Method 8081 for the extraction step then split into two portions for sample cleanup.  The logical question […]

ChromaBLOGraphy: Let me help you schedule your technical journey at Pittcon 2011 this year.

Nearly 20,000 people attend Pittcon from over 90 countries and there is a staggering amount to see on the technical front. Luckily the show has the presentation titles on-line and easily searched in the PDF format. Simply enter in your search term and quickly find your area of interest. Below is an excel sheet that will [...]

ChromaBLOGraphy: Analysis of Highly Toxic gases : Column Choice

A little follow up on the interesting topic that was blogged by Alan.  I promised to add a few comments on column selection as I have had several questions of this nature.   In general in gas analysis, you need to use columns with high retention. So only thick-film liquid phases like Rtx-1 or adsorption […]

ChromaBLOGraphy: It’s a confusing time for GC/MS analysts

I don’t know about you, but the more information I hear about switching from helium to hydrogen as a carrier gas, the more confused I get. When the helium shortage started, there were articles stating that this was a minor hiccup in the processing/supply chain, and capacity & inventories would be restored by the fall. [...]

ChromaBLOGraphy: How to make a good fused silica seal using PressTight type connections

Column coupling remains a very interesting topic. Whether its for connecting a guard column, a retention gap, column extension, transfer line s to one or multiple detection systems, or just repairing a broken column.  For fused silica coupling the PressTight has found wide application.  For ease-of-use the universal PressTight was developed. http://www.restek.com/catalog/view/370 To enhance response [...]

ChromaBLOGraphy: How to Increase the Life Time of your GC Columns? Part III Gases, Flows and Practical Operation

For operation of GC columns a carrier gas is required.  In the first blog of this series we zoomed into the importance of using clean carrier gas.  We also have a choice on type of carrier gas. Mostly Helium is used, because of its high optimal velocity and inertness but that gas is loosing its [...]

ChromaBLOGraphy: What happened to my GC column?

GC columns are commonly marketed for multiple methods/analyses, which is usually not an issue. Sometimes, however, when a column (or column set) has been used for one analysis, it may no longer work for another analysis. This is especially true when one analysis contains very dirty samples (or derivatized samples), and another contains very reactive [...]

ChromaBLOGraphy: Restek Innovations presented at the 37th ISCC in Palm Springs, California

Like every other year the most famous meeting on capillary separation techniques was organized in the USA.; This time it was in Palm Springs.  When you visit this place you will understand where the name comes from. (picture 1). Palm trees like to have their feet in water and their heads in the sun. In [...]

ChromaBLOGraphy: What do Chromatograms tell us? Peak Shape: Splitted or Broadened peak for first eluting Compound(s)

Chromatograms are like fingerprints.  If you can “read” chromatograms well, you often can find a plausible cause. In this series, we will show a series of chromatograms that are obtained from users and discuss some potential causes for the phenomena. Then we can move into some solutions for improvement.   Sometimes chromatograms look like Fig. [...]

ChromaBLOGraphy: How do I order a dip tube?

  A dip tube (also known as an outage tube) provides vapor space above liquefied gases in a sampling cylinder so that if expansion occurs with an increase in temperature, the pressure is not significantly increased. Basically, the length of the dip tube is used to determine the filling capacity of the cylinder. Outage is expressed as […]

Frequently Asked Questions: Air Sampling

... sulfurs (5–20 ppb) as well as some of the more challenging for the collection and storage of sulfur-containing or brominated compounds. Siltek...

Two Options for Analyzing Potential Genotoxic Impurities in Active Pharmaceutical Ingredients

... are differentiated by the group that forms an ester with the sulfur: mesylates contain a methyl group, besylates...

News: Restek Chromatographers Share Their Insights at COLACRO XIV

Beautiful Florianópolis in Santa Catarina, Brazil, was the site of this year’s Congresso Latino Americano de Cromatografia e Técnicas Relacionadas (COLACRO). Perhaps the most influential meeting on chromatography in South America, this biannual event was originally scheduled to be in … Continue reading

ChromaBLOGraphy: How to choose the correct GC column – Part 3

In this post, I will explain how one can use column capacity (along with detector selection) to help narrow down GC column choices even further. Before reading this post, I suggest you review Parts 1 & 2, which can be found in the links below. Part 1: http://blog.restek.com/?p=5426 Part 2: http://blog.restek.com/?p=5494   First, let’s talk [...]

ChromaBLOGraphy: Live Long and Prosper-How to make your HPLC columns last longer

We frequently get questions about how long an HPLC or UHPLC column should last. To borrow a phrase from my colleagues, “Your mileage may vary.”  Columns are like cars, so their lifetime depends how they are used and how well they are maintained. That being said, some phases are known to be more rugged than [...]

Frequently Asked Questions: Sample Preparation

Frequently Asked Questions: Sample Preparation FAQ

News: Deactivation of Metal Surfaces: Applications in Gas Chromatography (GC) for the Past 15 Years

Author: Jaap de Zeeuw Restek Corporation Published By: American Laboratory Year of Publication: 2012 Link: www.americanlaboratory.com/913-Technical-Articles/124285-Deactivation-of-Metal-Surfaces-Applications-in-Gas-Chromatography-GC-for-the-Past-15-Years/ Abstract: In 1987, Restek Corporation introduced a new way to deactivate metal columns, called Silcosteel®. The original surface was shielded in such a way … Continue reading

For advanced chromatogram searching, please check out our Chromatogram Library Search Tool.

Thiophene in Benzene on Rtx-Wax

GC_PC1357

Column: Rtx-Wax, 30 m, 0.32 mm ID, 1.00 µm (cat.# 12454)
Injector: Split
Detector: SCD

Sulfur Compounds on Rtx-1

GC_PC1271

Column: Rtx-1, 30 m, 0.32 mm ID, 4.00 µm (cat.# 10198)
Injector: Split
Detector: DP SCD

Sulfur Antibiotics on Raptor Biphenyl

LC_FF0530

Column: Raptor Biphenyl (cat.# 9309A5E), Dimensions:50 mm x 3.0 mm ID, Particle Size: 2.7 µm, Temperature: 20 °C
Detector: Waters Acquity PDA

Sulfur Antibiotics by UHPLC on Pinnacle DB Biphenyl

LC_GN0532

Column: Pinnacle DB Biphenyl (cat.# 9409212), Dimensions:100 mm x 2.1 mm ID, Particle Size: 1.9 µm, Pore Size: 140 Å, Temperature: 25 °C
Detector: Shimadzu Prominence SPD-M20A Diode array

Tobacco Extract on Ultra Aqueous C18

LC_0172

Column: Ultra Aqueous C18 (cat.# 9178575), Dimensions:250 mm x 4.6 mm ID, Particle Size: 5 µm, Pore Size: 100 Å, Temperature: Ambient
Detector: UV/Vis

16 hr Laboratory Air Sample with radiello 165

LC_GN0531

Column: Raptor C18 (cat.# 9304A65), Dimensions:150 mm x 4.6 mm ID, Particle Size: 2.7 µm, Pore Size: 90 Å, Temperature: 30 °C
Detector: UV/Vis

Sulfur Compounds on Rt-XLSulfur (micropacked)

GC_PC1221

Column: Rt-XLSulfur, 1 m, 0.75 mm ID (cat.# 19806)
Injector: Sample Valve
Detector: SCD

Sulfur Compounds on Rtx-1

GC_PC1223

Column: Rtx-1, 60 m, 0.53 mm ID, 7.00 µm (cat.# 10193)
Injector: Direct
Detector: FPD

Sulfur Compounds on Rtx-1

GC_PC1222

Column: Rtx-1, 30 m, 0.32 mm ID, 4.00 µm (cat.# 10198)
Injector: Split
Detector: Atomic emission detector (181 nm)

Sulfur Compounds in Headspace Sample of Mexican Beer on Rt-XLSulfur

GC_FF00483

Column: Rt-XLSulfur, 100/120 mesh, 1m, 0.95mm OD, 0.75 mm ID (cat.# 19806)
Injector: Headspace - Loop
Detector: SCD

Sulfur Compounds in Headspace Sample of Canadian Beer on Rt-XLSulfur

GC_FF00487

Column: Rt-XLSulfur, 100/120 mesh, 1m, 0.95mm OD, 0.75 mm ID (cat.# 19806)
Injector: Headspace - Loop
Detector: SCD

Sulfur Compounds in Beverage Grade CO2 Rt-XLSulfur

GC_FF00491

Column: Rt-XLSulfur, 100/120 mesh, 1m, 0.95mm OD, 0.75 mm ID (cat.# 19806)
Injector: Headspace - Loop
Detector: SCD, attn x 1

Sulfur Compounds in Headspace Sample of U.S. Beer on Rt-XLSulfur

GC_FF00494

Column: Rt-XLSulfur, 100/120 mesh, 1m, 0.95mm OD, 0.75 mm ID (cat.# 19806)
Injector: Headspace - Loop
Detector: SCD

Sulfinert Treatment Prevents Loss of Sulfur Compounds

GC_PC1176

Column: Rtx-1, 60 m, 0.53 mm ID, 7.00 µm (cat.# 10193)
Injector: Direct
Detector: Sievers 355 SCD

Sulfur Compounds and Hydrocarbons on Rt-XLSulfur

GC_PC00436

Column: Siltek, 1m, 0.95mm OD, 0.75 mm ID (cat.# 19806)
Injector: Not On-Column - Packed
Detector: SCD/FID

Sulfur Compounds on Rxi-1ms

GC_AR00861

Column: Rxi-1ms, 30 m, 0.32 mm ID, 4.00 µm (cat.# 13396)
Injector: Splitless
Detector: SCD

Sulfur in Gasoline on Rtx-1

GC_PC00198

Column: Rtx-1, 30 m, 0.32 mm ID, 4.0 µm (cat.# 10198)
Injector: Split
Detector: SCD

GHB (analyzed as GBL) in Urine on Rtx-5MS

GC_CF01038

Column: Rtx-5MS, 30 m, 0.25 mm ID, 0.25 µm (cat.# 12623)
Injector: Headspace - Syringe Split
Detector: MS-Scan

Comparison of Converted and Unconverted GHB on Rtx-BAC1

GC_CF01039

Column: Rtx-BAC1, 30 m, 0.32 mm ID, 1.80 µm (cat.# 18003)
Injector: Headspace - Syringe Split
Detector: FID

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