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 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…

  • 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

  • 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…

  • 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…

  • 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…

  • Resprep SPE Tube Parts & Accessories

    Restek

  • Thomson SINGLE StEP Nano Filter Vials

    Restek

    Ultra-low dead volume allows you to filter as little as 10 μL of sample and still obtain enough filtrate to make a 2 μL injection Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers Color-coded caps allow easy identification of 0.2 μm or 0.45…

  • 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

  • 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 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…

  • 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…

  • Small Cylinder Stand

    Restek

    This cylinder stand is designed to support small-diameter cylinders, such as 104L and 110L disposable cylinders. It is a simple, safe, and economical way to stabilize the position of small cylinders, while keeping them within close proximity. The stand is constructed of heavyweight painted steel…

  • PEEK Washers for ASE Systems

    Restek

    Meet original equipment manufacturer’s performance Available in various quantities

  • Replacement Septum for Gas Sampling Bags

    Restek

    Replacement Septum for Tedlar, ALTEF, and Multi-Layer Bag Valves, 4mm diameter, PTFE-faced silicone.

  • 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…

  • 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.

  • Thomson SINGLE StEP Standard Filter Vials

    Restek

    Recommended for samples containing less than 10% solid particulates Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers Minimize sample loss by eliminating multiple transfers Color-coded caps allow easy identification of 0.2 μm or 0.45 μm…

  • 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…

  • Thomson SINGLE StEP eXtreme Filter Vials

    Restek

    Provide multilayer filtration for viscous samples and samples containing up to 30% solid particulates Allow compounds to be separated from matrix, resulting in both higher signal-to-noise ratios and more differentiated peaks Easy-to-use vials offer fast sample filtration and require only a…

  • Ultra-High Pressure Sample Cylinders

    Restek

    Swagelok sample cylinders are made of 304L and 316L stainless steel to resist corrosion and DOT rated to 1,800 and 5,000 psig (TPED cylinders rated to 1,450 and 4,350 psig), which allows sampling at gas wellheads as well as on-site refineries. Each cylinder is hydrostatically tested to at least 5/3…

  • Resprep SPE Cartridges (Bonded Reversed Phases)

    Restek

    Hydrophobic (nonpolar) silica-based adsorbents; used to extract hydrophobic analytes from polar matrices, such as water (e.g., pesticides from water). All cartridges are manufactured using high density polypropylene and have polyethylene frits unless otherwise noted. Cartridges may be…

  • MTS-32 TD Multiple Tube Sequential Sampler

    Restek

    Allows sequential sampling of up to 32 thermal desorption tubes (3.5" each) Worry-free, independent operation lets you get more done—simply set up the unit in the field for extended sampling, then retrieve it at the end of the sampling period Reliably collect accurate samples;…

  • Silica Gel 60 (230-400 Mesh) 25 Kg Silicar

    Avantor - Macron Fine Chemicals™

    For Column Chromatography Grade: SilicAR CAS Number: 63231-67-4 HTS Number: 2811221000 Specific Gravity: 1L = 2.10 Kg Management of Change: N

  • Sample Cylinders, High Pressure

    Restek

    Swagelok sample cylinders are made of 304L and 316L stainless steel to resist corrosion and DOT rated to 1,800 and 5,000 psig (TPED cylinders rated to 1,450 and 4,350 psig), which allows sampling at gas wellheads as well as on-site refineries. Each cylinder is hydrostatically tested to at least 5/3…

  • Resprep Sample Delivery System

    Restek

    Use the Resprep sample delivery system to transfer large volumes of low viscosity samples directly from a bottle to a solid phase extraction cartridge, or to a disk on a vacuum manifold system for extraction or cleanup. Each unit consists of six transfer lines with a stainless steel weight on one…

  • 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…

  • Resprep Oil & Grease SPE Disks

    Restek

    47 mm glass fiber disks embedded with specialty bonded silica Meet requirements for EPA Method 1664.* Reduce emulsion formation and amount of solvent required by previous EPA methods No chlorofluorocarbons needed *A sodium sulfate drying tube (cat.# 26207) and a 0.45 µm PTFE…

  • 20mm Filters for ASE 200 Extraction Cells

    Restek

    Cellulose or glass fiber construction Fit 11 mL, 22 mL, and 33 mL cells Cellulose filters available in economical 1,000-packs

  • Resprep PPT 96-Well Plates

    Restek

    Polypropylene protein precipitation (PPT) 96-well plates offer highly efficient >99% protein removal Minimum 24-hour drip-free feature for easy in-well protein precipitation—no fear of backflushing or contamination Built-in dual-layer membrane with different porosities in each layer…

  • Thomson SINGLE StEP Low Evaporation Filter Vials

    Restek

    Enhanced evaporation prevention technology ensures less than 0.4% evaporation over 24 hours Easy-to-use vials offer fast sample filtration and require only a squeeze of your fingers Color-coded caps allow easy identification of 0.2 μm or 0.45 μm membranes in PVDF, PTFE, or nylon …

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