Products & Reviews

• 47 mm glass fiber disks embedded with styrene/DVB resin. • For chlorinated, benzidine-containing, or nitrogen-containing pesticides. • Meet requirements of EPA Methods 515.2 and 553.

This highly retentive, highly selective phase—unique to Restek—was developed specifically for the analysis of aldehydes and ketones as DNPH derivatives. Allure AK is a reversed-phase HPLC material that has the unique ability to separate all 13 carbonyl compounds specified in California Air Resources Board (CARB) Method #1004 using a simple acetonitrile/water gradient. Other columns require long analysis times or the use of tet…

Attach to the column in seconds to form an airtight seal. Increase column lifetime—prevent moisture and air from entering the column during storage. Two styles to choose from: glass or silicone material. Glass caps are color-coded for identifying detector and injector ends. Not recommended for reuse.

Specialized Columns for Mixed Polar and Nonpolar Compounds.

Equivalent to XAD-2 Resin Ultra-Clean resin typically eliminates the hassle of cleaning and testing resin for air sampling. For adsorbing semivolatiles in air. Cleaned and GC tested. Available in 100 gram quantities.

Reversible Flip Seal—Same Cost, Twice the Lifetime New reversible Flip Seal inlet seals from Restek last twice as long as other inlet seals. Simply use—flip—then use again. The reversible design doubles the number of analyses you get per seal. •Same easy sealing as Dual Vespel® Ring Inlet Seals—no extra washer needed. •Lower leak rate than OEM metal seals. •Maximum transfer of analytes to column, due to highly inert gold or Si…

• Optimized deactivation produces maximum response when analyzing trace levels of acetylene, methyl acetylene, and propadiene. • Stable response factors make this column ideal for process-type applications where recalibration must be minimized. • High loadability reduces peak tailing and improves separations. • Extended temperature range up to 250 °C for fast elution of high molecular weight (HMW) hydrocarbons and accelerated…

A 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 g…

The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support.Made of high-purity, type-B silica that minimizes activity and creates high-density bonding, the Ultra Amino Columns (USP L8) are designed for selective and reliable HPLC applications. Particle size: 3 μm or 5 μm, spherical Pore size: 100 Å Carbon load: 2% End-cap: no pH range: 2.5 to 8 Temperature limit: 80 °C USP phase code…

The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, type-B silica that minimizes activity and creates high-density bonding, the Ultra Cyano Columns (USP L10) are designed for selective and reliable HPLC applications.Particle size: 3 μm or 5 μm, spherical Pore size: 100 Å Carbon load: 8% End-cap: yes pH range: 2.5 to 8 Temperature limit: 80 °C USP phase co…

The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, type-B silica that minimizes activity and creates high-density bonding, Ultra Silica Columns (USP L3) are designed for selective and reliable HPLC applications. Particle size: 3 μm or 5 μm, spherical Pore size: 100 Å End-cap: no pH range: 2.5 to 8 Temperature limit: 80 °C USP phase code: L3 Phase catego…

Viva columns are based on a wide pore material we designed for optimal large-molecule separations.In developing Viva silica, we found that although many commercial wide-pore silicas meet the standard 300 Å mean pore size, most have very broad distributions about this mean, with a significant portion of their pore volume falling below 150 Å.This means a large portion of the surface area is unavailable to larger molecules. Viva…

Use our bulk packing materials to pack your own columns. Our extensive QC program ensures the high quality and reproducibility of these silicas. You can be confident that you are getting consistent, high-quality product when you source your silica from Restek. Use these materials for easy scale-up to preparative chromatography or for packing your own columns. Ultra Bulk Packing Materials Features: Prepare your own columns…

Subsurface degradation of fuel oil spills can be estimated by examining the ratios of C17/pristane and C18/phytane. To assist in identifying these four compounds from the complex fuel oil analysis, the Fuel Oil Degradation Mix contains these compounds for retention time determination.

MXT® columns are made from stainless steel tubing that has had the internal surface treated with our exclusive Siltek® surface treatment. The Siltek® layer makes the surface as inert as deactivated fused silica. The unique properties of the Siltek® treated surface enable us to treat the tubing with a wide variety of polymer phases.MXT®-WAX Columns Features: General-purpose columns for FAMEs, flavor compounds, essential oi…

Restek’s Rt®-Silica BOND columns are robust, versatile, selective PLOT columns that offer excellent performance for the analysis of light hydrocarbons, sulfur gases, and halocarbons above ambient temperature. In addition, carbon dioxide and other gases can be retained at ambient temperature on this silica-based column. High loadability, inertness, and consistent selectivity, as well as unmatched robustness at a maximum temper…

(5% diphenyl, 95% dimethyl polysiloxane)

midpolarity Crossbond® phase

(midpolarity Crossbond® phase)

(packed & micropacked)

Get more of what you want, and less of what you don't, with Roc™ LC columns from Restek.

Force LC columns are available with Restek's most popular and highly selective Biphenyl and FluoroPhenyl phases, as well as a general-purpose C18.

Restek's Raptor FluoroPhenyl column offers the ability to run in reversed-phase or HILIC mode for a variety of compounds. It is ideal for increasing sensitivity and sensitivity in LC-MS analyses. 

for Agilent 6890 and 7890 instruments.

Restek chemists developed the Ultra Carbamate column specifically for carbamates analysis. The unique packing separates 10 target carbamates in just 5 minutes with an 8 minute total cycle time. The column is compatible with fluorescence or LC-MS detection.* An Ultra Carbamate column can process as many as eight samples per hour, versus less than two samples per hour on a general-purpose C18 column. In addition to increased sam…