Sample Preparation, Chromatography

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Sample Preparation, Chromatography

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  • 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

  • 2 µm Frit Filters

    Restek

    For use in critical orifice fitting. Includes washers.

  • Aura Personal Air Samplers

    Restek

    Disposable 8-Hour Sampler Lines

  • Vacuum Gauges

    Restek

    High-quality vacuum gauges with 316 stainless steel wetted surfaces. –30" Hg to 0" Hg. Recommended for use with passive sampling kits. All are rear mount.

  • Q-sep QuEChERS Extraction Salts

    Restek

    Free-flowing salts transfer easily and completely. Easy-open packets eliminate the need for a second empty tube for salt transfer. Convenient slim packets fit perfectly into tubes to prevent spills. Ready-to-use tubes, no glassware required. Pre-weighed, ultra-pure extraction salts. …

  • 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…

  • 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…

  • Miniature Air Sampling Canisters

    Restek

    These small canisters are designed for controlled sampling, such as personal air sampling, as an alternative to tube and pump samplers. The 1,000 cc canister is suitable for sampling volatile organic compounds in air according to methods TO-14A, TO-15, IP-1A, ASTM 5466, OSHA PV 2120, and NJ DEP Low…

  • 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…

  • Celite 503

    MilliporeSigma

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

  • CarboPrep Reversing SPE Cartridges

    Restek

    High adsorbent capacity (surface area ~200 m 2 /g) for large volume sampling Chromatographic grade graphitized carbon provides consistent and quantitative recoveries of a wide variety of semivolatiles, pesticides, and herbicides 500 mg bed weight Reversing cartridge design allows…

  • Sample Inlets

    Restek

    Inlets have 1/4" stainless steel compression fitting on each end One end connects to flow controller or canister; nut on other end serves as rain guard Includes nuts and ferrules Two different lengths for use with large canisters and miniature canisters

  • 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

  • 60mL Sample Collection Vials for ASE 200 Systems

    Restek

    Cleaned, assembled, and ready to use Clear or amber glass Caps and PTFE-lined septa included

  • Florisil PR (Bulk Adsorbent)

    Restek

    Florisil PR is commonly used to remove polar interferences from pesticide residues. This bulk material is ideal for labs packing their own extraction cartridges for pesticide residue extractions. Pesticide residue grade Packaged in glass containers

  • 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

  • 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…

  • Integrated Passive Air Sampling Kits

    Restek

    Restek's passive air sampling kit incorporates all the hardware necessary to collect air samples and is easy to assemble for field sampling.* The improved filter design greatly reduces the number of potential leak sites. The passive air sampling kit is available in seven sampling flow ranges and…

  • 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…

  • 250mL Sample Collection Bottles for ASE 100/300 Systems

    Restek

    Cleaned, assembled, and ready to use Clear or amber glass Caps and PTFE-lined septa included

  • 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…

  • Thermal Desorption (TD) Tubes

    Restek

    High-quality thermal desorption tubes are suitable for ppt to ppm concentrations of volatile organic compounds (VOCs) in ambient, indoor, personal, and industrial hygiene environments. Fit Markes (ULTRA and UNITY), PerkinElmer, and Shimadzu thermal desorbers. Packed tubes come with a report…

  • 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

  • Celite 281

    MilliporeSigma

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

  • 7 µm In-Line Filters

    Restek

    This 316 stainless steel filter is designed to collect particles larger than 7 microns. We offer Siltek-treated and stainless steel versions (1/4" compression fitting on both ends). Note: frit is not replaceable.

  • Threaded Midget Bubbler

    MilliporeSigma

    Features and Benefits Threaded Midget Bubbler - 20mm threads. Fritted glass stem. Back pressure <7 in. of water with 15mL water. 6-dram vial (22mL) included. General description These borosilicate glass impingers (for particles) and bubblers (for gases and vapors) are ideal for NIOSH…

  • 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

  • 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…

  • SafeLok Sorbent Tubes

    Restek

    Feature patented diffusion-locking technology at either end of the sorbent bed to prevent diffusive ingress of atmospheric contaminants outside the pumped sampling period Significantly reduce the risk of contamination from poorly fitted or loose caps Prevent necking and other damage to the…

  • Regulators for Scott/Air Liquide Transportable Gases

    Restek

    Use the CGA-160 inlet connection with 14L Scott/Air Liquide transportable gases. Use the CGA-165 inlet connection with 48L Scott/Air Liquide transportable gases.

  • Gas Sampling Valves

    Restek

    Sulfinert treatment eliminates active sites in the valve or loop for better recovery of active compounds. Ideal for samples containing low concentrations of sulfur or other active compounds Sample loop sizes from 5 µL to 5mL

  • Ultra-Clean Resin

    Restek

    Equivalent to XAD-2 Resin—Exclusively from Restek! 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.

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