Separations Products & Reviews

100Å pore size, high ligand density;  available in 1.0, 2.0,  3.0, 4.6 and 10 mm ids;  30 - 250 mm lengths. Pursuit columns are ideal for pharmaceutical applications using LC/MS, from analyzing lead compounds and biological samples in drug discovery, to implementing dependable analysis of raw materials and approved drugs in the QC process.  Build on the large 200A pore size silica, high liquid density delivers up to 40% faster…

Advanced Polymer Technology for Simplified SPE   Bond Elut Plexa offers simple, easy-to-use methods with general purpose extraction mechanisms to simplify SPE. In addition, Plexa provides performance enhancements due to a unique polymeric architecture with a non-retentive, hydroxylated, amide-free surface and a non-polar PS/DVB core for retaining small molecules. Binding of proteins and lipids on the polymer surface is minimiz…

Polymeric Cation Exchange for Simplified SPE   Bond Elut Plexa PCX is a further milestone in the development of simple and robust SP methods. Plexa PCX uses a polymeric cation exchange resin that combines the outstanding properties of Bond Elut Plexa - superior flow characteristics and improved analytical performance - with strong cation exchange functionalities. This mixed-mode SPE sorbent removed neutral and acidic interfere…

The 1290 Infinity III Evaporative Light Scattering Detector (ELSD) is ideal for reproducible, sensitve detection of both volatile and nonvolatile compounds that cannot be detected by UV. A unique peltier cooled evaporator coupled with an original gas flow design allow subambient operation down to 10 °C. This delivers maximum sensitivity for compounds with significant volatility below 30 °C.

Pipette Based SPE      Bond Elut OMIX pipette tips reliably purify and enrich femtomole and picomole levels of peptides and proteins prior to MALDI-TOF or LC/MS/MS. The unique monolithic sorbent technology used in Bond Elut OMIX consistently outperforms other tips by delivering uniform flow and strong analyte-to-surface interactions. Available in three formats, Bond Elut OMIX tips bind more peptides to deliver better sequence…

200A pore size;  available in 3.0 and 4.6  mm ids, and lengths from 50 - 250 mm. Pursuit columns are ideal for pharmaceutical applications using LC/MS, from analyzing lead compounds and biological samples in drug discovery, to implementing dependable analysis of raw materials and approved drugs in the QC process.  Build on the large 200A pore size silica, high liquid density delivers up to 40% faster separations without sacrif…

Agilent Bio-Monolith HPLC columns provide high resolution and rapid separations of antibodies (IgG, IgM), plasmid DNA, viruses, phages and other macro biomolecules. The product family offers strong cation exchange, strong and weak anion exchange, and Protein A phases.

"Extend-C18 columns incorporate a unique patented bidentate silane, combined with a double-endcapping process that protects the silica from dissolution at high pH - up to pH 11.5. Columns are best applied for separations of compounds that are either (1) basic and have little or no retention at low or intermediate pHs, (2) more stable or more soluble at high pH, or (3) basic and show poor peak shape at low or intermediate pH.…

Thermal desorption (TD) combines sample preparation, extraction, and injection into a single automated process for the analysis of volatile and semi-volatile organic compounds (VOC and SVOC).

Mid-Polar UI column; a great choice for drugs of abuse testing and pesticides analysis. Agilent J&W continues their ultra inert innovations with the DB-35ms Ultra Inert GC column; a mid-polar column joining the existing apolar columns in the family, DB/HP-1ms and DB/HP-5ms.  With this new column, ultra inert performance is available for applications where different selectivity is needed for enhanced separations, including pest…

Specialized Columns for Mixed Polar and Nonpolar Compounds.

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.

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!

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…

Designed for use in all QuEChERS methods for pesticides in fruits and vegetables, including the original unbuffered method, AOAC 2007.1, and EN15662. Kit contains organochlorine, organonitrogen, organophosphorus, and carbamate fungicides and insecticides commonly used on fruits and vegetables. Volatile, polar, active, base-sensitive, and nonvolatile compounds are included to allow comprehensive evaluation of QuEChERS extracti…

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.

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.

(5% diphenyl, 95% dimethyl polysiloxane)

midpolarity Crossbond® phase

(midpolarity Crossbond® phase)