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New GC Posters from Restek

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Two new GC poster packages are available from Restek. Both feature attractive wall charts paired with companion guides for easy reference from the bench. The first package focuses on GC columns and includes two posters, one with tips on simplifying GC column selection and the other with solutions for GC troubleshooting. Concepts from both posters are combined in an in-depth technical guide that includes detailed discussion on optimizing resolution and improving chromatographic performance. GC liner selection is the topic of the second package and both the poster and companion brochure provide easy-to-read, informative comparisons of packing options, geometries, and dimensions, as well as types of injections and how they relate to liner choice. Request your free copies at www.restek.com/posters today!

 

GC Columns Poster Package

GNWC1612-UNVGC Column Selection Poster

Zip up humdrum lab space with this attractive, easy-to-understand GC column selection poster. Simple gradient charts for column stationary phase selectivity, film thickness, internal diameter, and length make it easy to choose the best column for your specific applications.

GNWC1723-UNVGC Troubleshooting Tips Poster

This handy GC troubleshooting poster summarizes the basic steps to fast, effective troubleshooting of GC instruments and analyses. Symptoms, causes, and solutions to common GC separation problems are laid out clearly with example chromatography.

GNBR1724-UNVGuide to GC Column Selection and Optimizing Separations Brochure

Simplify GC column selection and optimizing GC separations with this companion guide to our popular posters. Detailed discussion of the resolution equation and how it relates to column factors such as stationary phase selectivity, film thickness, internal diameter, and length teach you how to choose the best GC column for your separation easily and effectively. Also includes GC troubleshooting.

 

 

 

GC Liners Poster Package

GNWC1679-UNV_litpdfLiner Anatomy Poster

Use this attractive GC liner poster to understand liner features and to quickly determine which Sky® inlet liner is right for your application. Easy-to-read, informative comparisons of packing options, geometries, and dimensions.

GNBR1678-UNV

 

Liner Anatomy Bench Companion

This handy GC liner selection guide provides easy-to-read, informative comparisons of packing options, geometries, and dimensions, as well as types of injections and how they relate to liner choice. Keep this guide at your fingertips to make finding the right Sky® inlet liner a quick and easy decision.

 

 

Accurately Determine Mineral Oil Hydrocarbons in Food Using Restek’s New MOSH/MOAH Reference Standard

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Restek’s New MOSH/MOAH Reference StandardAccording to the German Federal Institute for Risk Assessment (BfR), mineral oil hydrocarbons (MOHs) may damage the liver, heart valves, and lymph nodes. Because the structure of some mineral oil hydrocarbons resembles that of PAHs, they may also be carcinogenic/mutagenic. These dangerous compounds can enter the food supply through farm and production equipment as well as printer ink, but in addition, current technology is unable to sufficiently remove mineral oil hydrocarbons from recycled cardboard. Once the cardboard is used for packaging, volatile hydrocarbons in mineral oils are then able to find their way into our food through gas diffusion.

In short, accurate determination of mineral oil hydrocarbons in food is imperative; however, because they include both aliphatic and aromatic hydrocarbons, analysis is difficult using standard methods. As a result, a special technique has been developed in Switzerland that uses LC coupled with GC-FID, and it is quickly gaining popularity throughout Europe and beyond. In collaboration with its German subsidiary and labs in the EU, Restek has formulated a stock reference standard mix (cat.# 31070) specifically for the analysis of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH).

This 9-component mix contains non-interfering internal standards as well as both MOSH and MOAH markers to correctly cut fractions for reliable results. Like all of the certified reference materials (CRMs) manufactured and QC-tested in Restek’s ISO-accredited labs, it can also help you satisfy your ISO requirements with ease.

With the release of this new CRM, Restek is proud to offer a complete solution for world-class MOSH/MOAH analysis, including Allure® silica LC columns, Rxi®-5Sil MS GC columns, and accessories. Visit www.restek.com/MOSH-MOAH to find the answers to your MOSH/MOAH challenges.

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

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pesticide_standard_prAny 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 nearly any matrix!

Isotopically labeled to provide the best approach for pesticide residue quantification, these new internal standards are economically priced and compatible with both LC-MS and GC-MS applications. They are even useful for optimizing LC-MS/MS system performance. Like all of the certified reference materials (CRMs) manufactured and QC-tested in Restek’s ISO-accredited labs, they can also help you satisfy your ISO requirements with ease.

 Compound

CAS#

Solvent

Conc. (μg/mL)

cat.#
atrazine-d5

163165-75-1

Acetonitrile

100

31984
carbaryl-d7

362049-56-7

Acetonitrile

100

31985
diazinon-d10 (diethyl-d10)

100155-47-3

Acetonitrile

100

31986
dichlorvos-d6

203645-53-8

Acetone

100

31987
dimethoate-d6

1219794-81-6

Acetonitrile

100

31988
diuron-d6

1007536-67-5

Acetonitrile

100

31989
linuron-d6

330-55-2

Acetonitrile

100

31990

As much as ever, Restek is your complete supplier for world-class food safety analysis: pesticide reference standard mixes and internal/surrogate standards, GC and LC columns and accessories, QuEChERS products, and more.

You will find a full selection of internal pesticide residue standards at www.restek.com

ASE® 150 & 350 Instrument Parts Are Now Available!

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Replacement Parts & Accessories for ASE® SystemsWe are pleased to announce the release of extraction cell caps and extraction cell bodies for accelerated solvent extraction (ASE®) 150 and 350 instruments. These new products expand our ASE® selection to cover the 100/300, 200, and 150/350 series as part of our drive to offer high-quality, affordable parts and accessories for ASE® instrumentation. In addition to caps and cells, Restek is also your source for PEEK washers, filters, replacement parts, vials, and tools.

You will find our entire line of ASE® parts at www.restek.com/ase   Plus, you can request your own copy of our newly released ASE® parts brochure here.

Now Online! The Restek EZGC™ Chromatogram Modeler Will Kick-Start Your GC Method Development

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The EZGC™ Chromatogram Modeler - www.restek.com/ezgcA revolutionary new version of Restek’s popular EZGC™ application is now live—it’s easier to use and it’s absolutely free. Just enter your compounds, and this cutting-edge system will recommend not only a GC column, but also the conditions to reliably separate your target analytes. It will even show you a modeled chromatogram! On a PC or Mac, desktop or tablet, the EZGC™ web app can go anywhere and will quickly become your go-to resource for creating optimized, custom methods.

•  It’s EZ to Register
-  If you have a Restek login, you’re already done!
(And if you don’t, you can get one at no charge and with no hassle.)

•  It’s EZ to Get Started
-  A quick, 5-minute video will show you everything you need to know.

•  It’s EZ to Use
-  Just enter your target compounds, and in seconds, the EZGC™ system gives you an optimized method, including column, conditions, and model chromatogram.

•  It’s EZ to Analyze
-  Model chromatograms are fully interactive. Zoom in, view chemical structures, and even overlay mass spectra.

•  It’s EZ to Save
-  Print your chromatogram and custom settings, or save them for future reference.

Take a step toward developing incredible GC methods at

www.restek.com/ezgc

New Alternate 8260B CRM From Restek Increases Labs’ Flexibility When Analyzing VOCs in Solid Waste

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Several issues can cause pentachloroethane to convert into tetrachloroethene, and the resulting elevated level of tetrachloroethene and low-biased pentachloroethane response may lead to failed proficiency tests (PTs) when analyzing VOCs in solid waste by EPA Method 8260B. With the release of its latest MegaMix® certified reference material (CRM), however, Restek saves you the hassle of dealing with this problem.

Restek still produces its ever-popular MegaMix® 8260B CRM (cat.# 30633), which features 76 compounds from the EPA’s list in one convenient ampul, but now, they also offer an alternative. Their new revised 8260B MegaMix® calibration mix (cat.# 30152) excludes pentachloroethane from an otherwise identical formulation, so it is ideal for labs that either have had difficulty with the calibration of tetrachloroethene or do not need to report on pentachloroethane. Labs that experience elevated tetrachloroethene response, but must still accurately test for pentachloroethane have the option of purchasing a single-component standard (cat.# 30404) as a partner to this new mix.

As with all Restek reference standards, you can expect the highest quality and reliability. These mixes are quantitatively analyzed to confirm concentration and identity of each compound, and since they are produced in our ISO-accredited labs, they satisfy requirements for CRMs.

To learn more about both of Restek’s 8260B mixes, visit www.restek.com/megamix

New GC Column Separates all EFSA PAH4 Priority Compounds

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PAHs in foodRestek has developed a GC column specifically for the analysis of polycyclic aromatic hydrocarbons (PAHs) in food safety and environmental samples. The new Rxi®-PAH column features a higher phenyl-content stationary phase that provides a unique selectivity to separate important PAHs that cannot be distinguished by mass spectrometry. Even difficult priority compounds, such as the European Food Safety Authority (EFSA) PAH4, are easily separated and accurately quantified, results that cannot be achieved on typical GC columns. The selectivity and efficiency of the Rxi®-PAH column make it ideal for EFSA PAH4 analysis; chrysene triphenylene separation and resolution of all benzofluoranthenes are easily achieved.  Excellent column efficiency means critical PAH separations can be maintained when the column is trimmed. In addition, the rugged, arylene-modified stationary phase is stable up to 360 °C, which ensures that relatively nonvolatile, higher molecular weight PAHs, such as dibenzo pyrenes, can be analyzed routinely without interference from column bleed.  Separation of benz[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[a]pyrene, and other PAH compounds make Rxi®-PAH columns ideal for EFSA PAH4 analysis, as well as other environmental and food safety testing. Visit www.restek.com/rxi-pah for product details.

Screen Drinking Water for EPA 539 Hormones Using a Calibration Standard Specially Formulated for UCMR3

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The Unregulated Contaminant Monitoring Rule 3 (UCMR3) requires monitoring of all public drinking water systems with 10,000 or more customers. For hormone screening in finished drinking water, UCMR3 lists the same seven compounds as EPA Method 539; however, the concentrations differ between the two lists.

A new certified reference material (CRM) released by Restek contains the seven hormones listed in EPA Method 539 conveniently formulated to the concentrations outlined by UCMR3 to save analysts time and labor. For those following EPA 539 guidelines, Restek also offers the same mix of hormones with the appropriate concentrations.

Compound List for Restek's EPA Method 539 CRMs

Of course, like all Restek CRMs, these standards are both manufactured and QC-tested in an ISO-accredited lab to easily satisfy ISO requirements.

www.restek.com/539-standards

Analyze a Full EPA 524.3 List Using Just Three Ampuls With New Restek EPA 524.3 Certified Reference Materials!

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In support of the U.S. Safe Drinking Water Act (SDWA), Restek has formulated a complete set of EPA 524.3 reference standards for the monitoring of purgeable organic compounds in drinking water—using as few as three ampuls! This collection of certified reference materials (CRMs) also covers the seven volatile organic compounds (VOCs) included in the Unregulated Contaminant Monitoring Rule 3 (UCMR3), which requires monitoring of all public drinking water systems with 10,000 or more customers. It is also ideal for surface water and groundwater testing inside or outside the U.S.

This new set of reference standards offers a full 82-component EPA 524.3 list using as few as three ampuls to reduce prep time and chances for error or contamination. The EPA 524.3 VOA MegaMix® ampul includes the required oxygenates group for convenient ordering, while the volatile gases are prepared separately to allow replacement of shorter-life components without wasting money on the full list. Internal and surrogate standards are available independently or as a combined mix, letting analysts choose the option that works best for them. Of course, like all Restek certified reference materials (CRMs), they are manufactured and QC-tested in an ISO-accredited lab to easily satisfy ISO requirements.

Simplify your EPA 524.3 analyses and start saving today with Restek’s new reference standards set.
www.restek.com/524.3-standards

The New USLC® Toolbox Gives You All the Right Tools—All in One Box

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USLC™ Method Development ToolboxRestek’s USLC® column set represents the widest range of reversed phase selectivity available with just 4 stationary phases: Aqueous C18, IBD, Biphenyl, and PFP Propyl. It simplifies column choice for fast, effective method development—and new USLC® toolboxes make things even easier!

A USLC® method development toolbox contains all 4 USLC® stationary phases in 1 convenient package. Available for UHPLC (1.9 µm) and HPLC (3 or 5 µm) in 50, 100, or 150 mm lengths, this must-have companion for method developers also includes a selection guide to help ensure that you always choose the right column the first time.

To learn more about USLC® technology and order your lab a method development toolbox, call 1-814-353-1300, ext. 3, or visit www.restek.com/uslc today.

Restek USLC® Columns: Choose Columns Fast. Develop Methods Faster.