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  • Rtx-Volatile Amine Columns (fused silica)

    Restek

    The Rtx-Volatile Amine column was designed specifically for analyzing volatile amines in difficult matrices, such as water. The unique base deactivation creates an exceptionally inert surface for these sensitive compounds, resulting in highly symmetrical peaks, which allow low detection limits. The…

  • Ultra C1 Columns (USP L13)

    Restek

    Ultra HPLC Columns 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, these columns are designed for selective and reliable HPLC applications. …

  • Rtx-1 Columns (fused silica)

    Restek

    nonpolar phase; Crossbond dimethyl polysiloxane General-purpose columns for solvent impurities, PCB congeners (e.g., Aroclor mixes), simulated distillation, arson accelerants, gases, natural gas odorants, sulfur compounds, essential oils, hydrocarbons, semivolatiles, pesticides, oxygenates. …

  • MXT-Volatiles Columns (Siltek-treated stainless steel)

    Restek

    proprietary Crossbond diphenyl/dimethyl polysiloxane phase MXT-Volatiles columns were the first columns designed specifically for analyses of the 34 volatile organic pollutants listed in U.S. EPA Methods 601, 602, and 624. With these columns, you can quantify all compounds listed in these…

  • Force™ FluoroPhenyl LC Columns (USP L43)

    Restek

    Capable of both reversed-phase and HILIC separations Ideal for increasing sensitivity and selectivity in LC-MS analyses Offers increased retention for charged bases Similar Phase(s): Discovery HS F5, Luna PFP(2), Pursuit PFP, Acquity UPLC HSS PFP, Hypersil Gold PFP, Titan PFP (1.9…

  • MXT-65TG Columns (Siltek-treated stainless steel)

    Restek

    high-polarity phase; Crossbond diphenyl dimethyl polysiloxane The MXT-65TG phase resolves triglycerides by degree of unsaturation as well as by carbon number. Because of the chemistry required to achieve 370°C thermal stability, an MXT-65TG column should not be used for analyses of…

  • Polar-Deactivated Guard/Retention Gap Columns (fused silica)

    Restek

    polar polyethylene glycol deactivation Tested with a comprehensive test mix to ensure high inertness Polyethylene glycol deactivation layer provides optimum wettability for polar compounds Minimize peak splitting when using polar solvents such as methanol or water Compatible with…

  • Rxi-624Sil MS Columns (fused silica)

    Restek

    midpolarity Crossbond phase Rxi fused silica capillary GC columns were designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to outstanding performance, this combination of column…

  • HayeSep Packing Materials

    Restek

  • Rtx-VRX Columns (fused silica)

    Restek

    proprietary Crossbond phase The Rtx-VRX stationary phase and optimized column dimensions provide low bleed, excellent resolution, and fast analysis times for volatile compounds. Application-specific columns for volatile organic pollutants. Excellent for U.S. EPA Method 8021 compounds. …

  • Rtx-5 (G27) Columns (fused silica)

    Restek

    low-polarity phase; Crossbond diphenyl dimethyl polysiloxane The diphenyl dimethyl polysiloxane stationary phase is the most popular GC stationary phase and is used in a wide variety of applications. All residual catalysts and low molecular weight fragments are removed from the Rtx-5 polymer,…

  • Rxi-5Sil MS Columns (fused silica)

    Restek

    low-polarity phase; Crossbond 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane Rxi fused silica capillary GC columns were designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to…

  • Rtx-BAC1 Columns (fused silica)

    Restek

    proprietary Crossbond phase These columns separate to baseline all blood alcohol compounds in blood, breath, or urine, in less than 3 minutes, under isothermal conditions. Isothermal analysis increases productivity by eliminating the need for oven cycling. Confirmation is easily achieved with…

  • Ultra Amino Columns (USP L8)

    Restek

    Ultra HPLC Columns 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, these columns are designed for selective and reliable HPLC applications. …

  • Rxi-PAH Columns (fused silica)

    Restek

    midpolarity proprietary phase The Rxi-PAH GC columns were designed by Restek with a higher phenyl-content stationary phase that provides unique selectivity to separate important polycyclic aromatic hydrocarbons (PAH) for food safety that cannot be distinguished by mass spectrometry. Even…

  • Rtx-PCB Columns (fused silica)

    Restek

    proprietary Crossbond phase Unique polymer for PCBs analysis by GC-ECD or GC-MS. Good results for other semivolatiles. Low polarity; inert to active compounds. Stable to 340°C

  • Rtx-200 Columns (fused silica)

    Restek

    midpolarity phase; Crossbond trifluoropropylmethyl polysiloxane Rtx-200 columns have accomplished many difficult separations not possible on any other bonded stationary phase. Many analysts consider these the best, most inert midpolarity columns available. The trifluoropropylmethyl polysiloxane…

  • Empty Chromatography Columns

    Restek

    316 stainless steel tubing complete with end-fittings, frits, nuts, and ferrules Preassembled prior to shipment Internal 1/16" seats are compatible with Valco and Parker fittings

  • Stabilwax-DA Columns (fused silica)

    Restek

    polar phase; Crossbond acid-deactivated Carbowax polyethylene glycol—for acidic compounds Stabilwax-DA bonded polyethylene glycol has an acidic functionality incorporated into the polymer structure. This permits analysis of acidic compounds without derivatization, significantly reduces…

  • Rxi-XLB Columns (fused silica)

    Restek

    low-polarity proprietary phase Rxi fused silica capillary GC columns were designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to outstanding performance, this combination of column…

  • MXT-500 SimDist Column (Siltek-treated stainless steel)

    Restek

    nonpolar phase Manufactured from Siltek treated stainless steel tubing, MXT columns are the most durable high temperature GC columns available. As outlined in ASTM Method D6352, high temperature simulated distillation requires a column that can withstand temperatures to 430°C. MXT-1HT…

  • Rxi-17Sil MS Secondary Columns for GCxGC (fused silica)

    Restek

    midpolarity Crossbond phase Rxi fused silica capillary GC columns were designed specifically to be the best columns available, for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity. In addition to outstanding performance, this combination of column…

  • Rtx-35 Columns (fused silica)

    Restek

    midpolarity phase; Crossbond diphenyl dimethyl polysiloxane An Rtx-35 column is a popular confirmation column for pesticides and herbicides in conjunction with an Rtx-5 or Rtx-1701 column. The higher phenyl content causes useful elution order and retention time changes. General-purpose…

  • CarboBlack Packing Materials

    Restek

    CarboBlack B supports up to 10% loading of a nonsilicone liquid phase CarboBlack C supports up to 1% loading of a nonsilicone liquid phase Graphitized carbon black offers unique selectivity and very little adsorption for alcohol analyses. Two types of CarboBlack supports are available,…

  • MXT-20 Columns (Siltek-treated stainless steel)

    Restek

    low- to midpolarity phase; Crossbond diphenyl dimethyl polysiloxane MXT-20 polymer is synthesized to exacting standards. All residual catalysts and low molecular weight fragments are removed from the polymer, providing a tight monomodal distribution and extremely low bleed. …

  • Rtx-225 Columns (fused silica)

    Restek

    polar phase; Crossbond cyanopropylmethyl phenylmethyl polysiloxane The cyanopropyl-containing Rtx-225 phase is slightly less polar than bonded polyethylene glycol (PEG) phases, but it can be used for many of the same applications. Improvements to the Rtx-225 polymer have increased thermal…

  • Rtx-DHA Columns (fused silica)

    Restek

    Crossbond 100% dimethyl polysiloxane—optimized for hydrocarbon analysis Gasolines are complex mixtures of hundreds of compounds. Information about concentrations of the individual components is important for evaluating raw materials and for controlling refinery processes. ASTM D6730-01…

  • Ultra C18 HPLC Prep Columns

    Restek

    Easy scale-up from Restek analytical columns Popular bonded phases Restek makes it easy to scale up your separations. We offer a wide range of semipreparative and preparative-scale columns packed with many of our popular Ultra, Allure, Pinnacle DB, and Viva bonded phases on a 5 μm…

  • Deactivated Fused Silica Tubing (Nonpolar)

    Restek

    Useful as guard columns, transfer lines, or long retention gaps Inertness-tested with the Grob test mix includes test chromatogram. 5-meter banded sections mounted in a Restek cage. Maximum temperature: 325°C Note: 30- and 60-meter lengths are banded in 5-meter sections. …

  • Stx-CLPesticides Columns (fused silica with Siltek deactivation)

    Restek

    proprietary Crossbond phase Many laboratories analyzing organochlorine pesticides struggle with breakdown and adsorption of endrin, DDT, and methoxychlor caused by active sites throughout the analytical system. Siltek passivation technology enables these columns to offer unsurpassed inertness…

  • Ultra Quat Columns

    Restek

    A retentive, high-purity, base-deactivated, reversed-phase packing. Ideal for the analysis of paraquat and diquat or other quaternary amines. Particle Size: 3 µm or 5 µm, spherical Pore Size: 100 Å pH Range: 2.5 to 8 Temperature Limit: 80°C

  • Rtx-CLPesticides2 Columns (fused silica)

    Restek

    proprietary Crossbond phase Improved resolution and faster analyses, compared to 1701 or phenyl phases, make these the pesticide columns of choice. Rtx-CLPesticides columns are specially designed to overcome the coelutions and analyte breakdown typically encountered in chlorinated pesticide…

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