Sample Preparation, Chromatography

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Sample Preparation, Chromatography

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  • Rocker Vacuum Pumps

    Restek

    Oil-free vacuum pumps are piston powered, so they do not pollute the air and require minimal maintenance Quiet, low-vibration units keep disturbances to a minimum Built-in thermal protector automatically shuts off pump if it overheats and then restarts it once the unit is cool Inlet filter…

  • Syringe Filters with Luer Lock Inlet

    Restek

    Luer lock inlet offers leak-tight syringe connection Variety of filter types, porosities, and diameters Color coded for easy identification Rugged polypropylene housing Autoclavable to 121°C for 15 minutes Quantity break pricing for greater savings Cellulose Acetate, Nylon,…

  • Q-sep QuEChERS Extraction Salts

    Restek

    QuEChERS methods are fast, easy, and cost-effective, and Restek Q-sep products make QuEChERS procedures even simpler. All extraction salts, sorbents, and sample tubes are included—no specialized equipment or glassware is required. Prepare samples more efficiently with a complete line of…

  • Q-sep QuEChERS dSPE Tubes for Extract Cleanup

    Restek

    QuEChERS methods are fast, easy, and cost-effective, and Restek Q-sep products make QuEChERS procedures even simpler. All extraction salts, sorbents, and sample tubes are included—no specialized equipment or glassware is required. Prepare samples more efficiently with a complete line of…

  • Resprep 12- or 24-Port SPE Manifolds

    Restek

    Use with any standard male luer end SPE cartridges Inert, PTFE sample guides reduce cross-contamination and carryover Flexible sample collection rack will accommodate a variety of receiving vessels Quick vacuum-release valve for better system control Individual valves allow vacuum…

  • Ottawa Sand (Bulk Adsorbent)

    Restek

    Ottawa sand is listed in several U.S. EPA methods as the specified medium for matrix spike and laboratory control blanks. Sample medium for matrix spikes and laboratory control blanks Packaged in convenient 5 kg buckets

  • Cell Cleaning Brushes for ASE 100/200/300 Cells

    Restek

    Firm nylon bristle brushes for easy cell cleaning and removal of solid samples Range of sizes to fit all extraction cells for ASE 100, 200, and 300

  • Visiprep™ Large Volume Sampler for use with 3 or 6 mL SPE tubes (includes 4…

    MilliporeSigma

    General Description For continuous "hands off" direct transfer of multiple liquid samples A Visiprep large volume sampler enables you to transfer low viscosity samples directly from any sample container to conventional solid phase extraction tubes on a Visiprep SPE vacuum…

  • ALTEF Gas Sampling Bags

    Restek

    Sampling bags are a low-cost whole air sampling device for high level VOCs and permanent gases. Several EPA, NIOSH, and OSHA methods exist for bag sampling for a variety of applications: stationary sources emissions; workplace atmospheres; ambient, indoor air quality; and breath analysis. Choose…

  • Mini-Regulator for Natural Gas and Refinery Gas Standards

    Restek

    0–300 psig inlet pressure range 0–15 psig outlet pressure range Supplied with 0–15 psig outlet pressure gauge, brass CGA 170 nut and nipple, and 1/8-inch compression outlet

  • Celite 281

    MilliporeSigma

    CAS No.: 68855-54-9 pH: 10 (100 g/l, H2O, 20°C) Solubility: Bulk Density: 300 kg/m3

  • Q-sep Bottle Top Solvent Dispenser

    Restek

    Accurately and precisely dispense liquids for QuEChERS extractions with this versatile pump. A quick, simple adjustment lets you set the output volume anywhere from 2.5 mL to 30 mL per stroke, and the included adaptors will accommodate most reagent bottles. Adjustment knob offers 56 output…

  • Resprep SPE Tube Parts & Accessories

    Restek

  • Celite 545 Particle Size 0.02-0.1 mm

    MilliporeSigma

    CAS No.: 68855-54-9 pH: 10 (100 g/l, H2O, 20°C) Solubility: Bulk Density: 300 kg/m3

  • Tedlar Sampling Bags

    Restek

    Sampling bags are a low-cost, whole-air sampling device for high-level VOCs and permanent gases. Several EPA, NIOSH, and OSHA methods exist for bag sampling for a variety of applications: stationary sources emissions; workplace atmospheres; ambient, indoor air quality; and breath analysis. Choose…

  • Q-sep Tube Racks

    Restek

    Available for 2 mL, 15 mL, and 50 mL tubes Alphanumerical grid reference on top tier for easy identification of samples Easy to assemble; simply fold and snap together securely

  • Soil Gas Passive Air Sampling Kits

    Restek

    This unique grab sampler is specifically designed for soil gas sampling by allowing the connection of tubing coming from the soil gas sample port. The innovative design minimizes connections and leaks and houses a critical orifice in the tee fitting. It also incorporates a vacuum gauge and 2…

  • Carrier Basket for ASE Cells

    Restek

    Sturdy stainless steel construction to carry full or empty ASE cells and caps Can hold twelve complete 33 mL cell assemblies and more of smaller sizes

  • Air Liquide High-Purity VOC Regulators

    Restek

    Single-stage, stainless steel Two pressure gauges and CGA-180 fitting Stainless steel diaphragm and Kel-F seat Accurate pressure control even at low flow rates Individually tested for leaks and impurities

  • Diskcover-47 Extraction Disk Holder

    Restek

    Compatible with most vacuum manifold systems that accept 1/8-inch male luer fittings Sample can be automatically introduced via 1/8-inch PTFE tubing or from the optional Diskcover-47 reservoir

  • Accessories for Filter Vials

    Restek

  • Gas Sample Loops (Sulfinert-Treated)

    Restek

    1/16" fittings, 1mm ID, for "W Type" valves Ideal for samples containing low concentrations of sulfur or other active compounds Sample loop sizes from 5 µL to 5 mL Sulfinert treatment eliminates active sites in the valve or loop for better recovery of active compounds.

  • Replacement Combination Vacuum/Pressure Gauges

    Restek

    2-inch vacuum/pressure gauges, 316 stainless steel with 1/8" NPT fitting and center back mount. Recommended for use with canisters.

  • ACTI-VOC Low-Flow TD Sampling Pump

    Restek

    Robust, low-flow pump optimized for sampling volatile organic compounds (VOCs) onto thermal desorption (TD) sorbent tubes Small, lightweight, easy to use, and intrinsically safe—ideal for personal monitoring and a wide range of other air and gas sampling applications Compatible with any…

  • Ashcroft Test Gauges

    Restek

    High-accuracy test gauges are recommended for verifying the vacuum/pressure in canisters before and after sampling. The 6-inch face on the analog gauge allows for easy reading. The digital gauge operates on two AAA batteries and offers an unambiguous readout. Both gauges have an accuracy of +/–…

  • Method Specific SPE Cartridges

    Restek

    These cartridges have been specifically designed to provide consistent and reproducible results for the method or application stated. All cartridges are manufactured using high density polypropylene and have polyethylene frits unless otherwise noted. Cartridges may be processed by any one or…

  • Multi-Layer Foil Gas Sampling Bags

    Restek

    Sampling bags are a low-cost whole air sampling device for high level VOCs and permanent gases. Several EPA, NIOSH, and OSHA methods exist for bag sampling for a variety of applications: stationary sources emissions; workplace atmospheres; ambient, indoor air quality; and breath analysis. Choose…

  • Raw Polyurethane Foam (PUF) Plugs

    Restek

    Unwashed PUF plugs for both low-volume and high-volume sampling Flame retardant free—making them easier to clean for trace analysis Compliant with EPA and ASTM methods—0.022 g/cm 3 density Glass holders sold separately

  • Luer Lock Valve Adaptors

    Restek

    Use a luer lock valve adaptor to connect a luer lock fitting to a Rheodyne or Valco valve.

  • Extrelut Nt Refill Pack For Column Fillings Extrelut Nt 20

    MilliporeSigma

    CAS No.: 68855-54-9 pH: 10 (100 g/l, H2O, 20°C) Solubility: Bulk Density: 300 kg/m3

  • Model 1062 Vacuum Bag Sampler

    Restek

    The model 1062 vacuum bag sampler provides fast sampling with zero cross-contamination. A vacuum created in the box draws air into the sampling bag without drawing it through the vacuum pump first, as is the case with standard air sampling pumps, thereby preventing contamination of the sample. This…

  • SilcoCan Air Sampling Canisters with RAVE Valve

    Restek

    For ultimate inertness, SilcoCan air sampling canisters feature our unique Siltek treatment technology. Even highly active components, at low parts-per-billion concentrations, can be readily sampled and stored without loss. The RAVE valve is a high-quality, metal-to-metal seal, 2/3-turn valve with…

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