New Reference Standards for Accurate trans Fat Determination

trans fats reference standards imageryGrowing concern about the impact of partially hydrogenated oils on human heart health makes accurate data on trans fat content in foods critical for protecting consumers. New reference standards from Restek help you ensure that your lab is generating accurate results. In addition to a derivatization agent, we also offer internal and calibration standards of verified composition and stability. Paired with an Rt-2560 GC column, these new reference standards help ensure accurate determination of trans fat content in foods and edible oils, and they are suitable for AOAC and AOCS methods.

Struggling with EtG/EtS matrix interferences?

A Raptor EtG/EtS column is your solution! Typical methods for EtG and EtS analysis have several limitations: poor resolution from matrix components, long run times that limit sample throughput, and short column lifetimes. Restek has developed a new Raptor EtG/EtS column that consistently retains and resolves EtG and EtS from matrix interferences, providing accurate, reliable results injection after injection. Reliable performance and long column lifetime make this column ideal for alcohol consumption monitoring by high-throughput labs. Paired with Restek reference standards and our fast, 4-minute, dilute-and-shoot LC-MS/MS method, the Raptor EtG/EtS column allows you to analyze EtG/EtS samples with confidence.

Restek chemists became the first to combine the speed of superficially porous particles (also known as SPP or “core-shell” particles) with the resolution of highly selective USLC technology. This new breed of chromatographic column allows you to more easily achieve peak separation and faster analysis times without expensive UHPLC instrumentation. Learn more about Raptor LC columns at

Save time and increase certainty with Restek’s definitive EtG/EtS method, a Raptor EtG/EtS column, and our quality reference standards!

Add the Performance of Restek’s RAVE Valves to Your Entech Air Cans

Restek Air Valve Excellence (RAVE) is now available for the easy retrofit of 3.2 L, 6 L, and 15 L Entech air sampling canisters. These new RAVEn valves have an identical internal design to the incredibly popular and rugged RAVE valves recently released on Restek’s SilcoCan, TO-Can, and miniature air sampling canisters. Upgrade from your TOV and TOV-2 valves—with no modification needed!

Order today at


About RAVE Valves

Restek Air Valve Excellence (RAVE) brings proven long life, leak-free performance, and effortless operation to your air sampling canisters. This durable design has been engineered to exceed 15,000 cycles—and every valve is leak-tested with helium to 1×10-6 mL/sec before it leaves our facility. The W-type valve seats are work-hardened to enhance damage resistance, while the wetted surfaces contain no moving parts. And because convenient, reliable field use isn’t just about withstanding the rigors of harsh environments, the RAVE valve achieves full closure with a quick twist of the fingers (only 10 in-lb) and is easy to access, even for big hands or when wearing bulky gloves.

Standard on Restek’s full line of SilcoCan, TO-Can, and miniature air sampling canisters, these American-made valves are also ideal for upgrading existing canisters. Rugged stainless steel RAVE valves can be ordered with Siltek treatment for added inertness and either 2 or 3 ports to accommodate an optional gauge. Plus, diaphragm rebuild kits are available to further extend the life of these long-lasting air valves. Turn to your trusted partner for air sampling and chromatography—order Restek Air Valve Excellence for your air sampling canisters today.

Simplify the Switch to HILIC with Raptor HILIC-Si Columns

Restek is bringing the speed and reliability of Raptor LC columns into the HILIC realm with the addition of the Raptor HILIC-Si column. HILIC is an increasingly popular alternative to reversed-phase LC for challenging polar analytes because it provides better retention of water-soluble compounds that are separated by polar differences. The Raptor HILIC-Si column simplifies the switch to HILIC because it delivers rugged Raptor performance, provides SPP column speed for faster analyses than traditional FPP silica columns, retains polar compounds without ion-pairing reagents, and is fully reliable, efficient, and selective with LC-MS compatible mobile phases.

Restek chemists became the first to combine the speed of superficially porous particles (also known as SPP or “core-shell” particles) with the resolution of highly selective USLC technology. This new breed of chromatographic column allows you to more easily achieve peak separation and faster analysis times without expensive UHPLC instrumentation. Learn more about Raptor LC columns at

Rugged, reliable Raptor HILIC-Si columns make the analysis of polar compounds fast, easy, and MS friendly!

New THCV Standard for Medical Cannabis Testing

Analyze medical cannabis samples more easily and accurately with Restek’s new tetrahydrocannabivarin (THCV) standard. This new certified reference material (CRM) is DEA-exempted and reduces the time, expense, and variability associated with preparing standards directly from neat material. Verified in composition and stability, Restek’s THCV standard is manufactured and QC-tested in ISO-accredited labs to ensure quality and satisfy ISO requirements. Our THCV CRM was developed to improve LC and GC methods for medical cannabis potency testing and strain identification. It is the latest addition to Restek’s suite of products for medical cannabis analysis including potency, strain ID, terpenes, pesticides, and residual solvents test methods.
Get details at

Set Your Sights on Superior Performance with Restek PAL SPME Arrow and Test Mix

SPME Arrows and Test MixTraditional SPME fiber technology has some significant drawbacks including poor mechanical stability and a small phase volume. The Restek PAL SPME Arrow system is a revolutionary change in microextraction that combines exceptional robustness with faster extraction times and trace-level sensitivity. In contrast to traditional SPME fibers, SPME Arrows contain significantly more phase volume, which allows more target analyte to be extracted in less time, significantly increasing sample throughput. In addition, the stainless steel construction, unique Arrow tip, inner stabilizing rod, and outer sheath design fully protect the phase, minimizing both analyte loss and mechanical damage. Use with our new SPME test mix to ensure performance after each installation. This mix is a certified reference material (CRM) with verified composition and stability.


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

Tractor spraying a field at sunset

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, and pyrethrins. Use these standards to simplify method development, establish instrument detection limits (IDLs), verify performance, test stability, and resolve degradation issues. Isomeric in nature, the pyrethrins neat material contains the following isomers: cinerin I and II, jasmolin I and II, and pyrethrin I and II. Isomer ratios for each lot are given in elution order on the certificate. Restek is your one-stop shop for accurate, reliable pesticides analysis. We are the only reference standard provider that offers everything you need from sample prep to LC and GC columns
and consumables.

Product Details

EZGC Online Tools Now in Multiple Languages

GC method development just got easier for scientists all around the globe.
Restek’s EZGC online method development tools are now available in English, Portuguese, Spanish, French, Italian, Dutch, German, Japanese, and Chinese languages. No matter where you are in the world, EZGC software lets you develop new GC methods in minutes directly from your desk and optimize or modify existing methods reliably and without guesswork. Increase your productivity with our free, easy-to-use EZGC online software—it saves time, increases certainty, and is now available in multiple languages.


Overview of Restek’s EZGC Online Tools
New Pro EZGC Chromatogram Modeler
This new and improved version of our popular EZGC chromatogram modeler for polymer capillary columns is just as simple to use as the original, but it has been updated and now offers advanced options that give you more control. Based on user feedback, the new Pro EZGC chromatogram modeler lets you do the following:
• Start with either the column you have or a column recommended by the program.
• Select compounds from our libraries or bring your own list.
• Target specific compounds for resolution.
• Alter the GC conditions to optimize your model quickly and easily.
• Repeatedly refine the temperature program.
• Switch carrier gases.
• Change the control method (constant flow, pressure, or linear velocity).
• View elution temperatures in the peak list.
• See results for multiple phases.

EZGC Method Translator and Flow Calculator
The EZGC method translator and flow calculator tools make it simple to switch carrier gases, change column dimensions or control parameters, or to optimize a method for speed or efficiency. Simply enter your method specifications and the program will return a full set of calculated method conditions that will provide similar chromatography. Use the EZGC method translator and flow calculator tool to optimize your analysis for speed so you can increase sample throughput!

Keep Your LC Running Smoothly with New Accessories from Restek

Simplify maintenance with the latest LC accessories from Restek. Reusable EXP2 HPLC/UHPLC fittings allow repeated 20,000+ psi seals to be easily made without wrenches. The patented titanium/PEEK ferrule provides zero-dead-volume connections without compromising high-pressure seals. Their compact design makes them perfect for tight spaces, such as small oven compartments and six-port injection valves. In addition, Restek now offers Opti-Max check valves, which provide exceptional performance and reliability while being easy to install and replace. Opti-Max check valves feature Free-Turn housings, which allow the valve to be removed with the tubing still attached, making maintenance fast and reducing fitting wear. Opti-Max check valves are made using rugged stainless steel cartridge bodies with a ceramic ball and seat to ensure longevity in harsh acetonitrile environments.

Visit and to learn more.

The Next Level of True Blue Performance: New Topaz GC Inlet Liners from Restek Are In Stock Now

The revolutionary new deactivation technology used for every Topaz GC inlet liner delivers unbelievably low breakdown for accurate and precise low-level GC analyses. Unbeatable manufacturing controls and a battery of industry-specific QC testing ensure that every lot exhibits superior reliability and reproducibility across a broad range of compound classes. In addition, Topaz liners are shipped in packaging developed for unparalleled cleanliness to maximize GC uptime and lab throughput for the ultimate in productivity.

In short, Topaz GC inlet liners from Restek feature inertness and performance you have to see for yourself to believe, which is why free samples are readily available upon request. Simply contact Restek or your local Restek representative to let a Topaz liner prove itself in your instrument.

Topaz liners are available in a full range of geometries and configurations for every instrument in your lab, regardless of the brand or manufacturer, and they are backed by Restek’s 100% Pure Satisfaction guarantee. If a liner doesn’t perform to your expectations, Restek will replace it or credit your account.

Step away from the frustration and uncertainty of ordinary liners—expect more, every time, with new Topaz GC inlet liners.

Order yours now at