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…

  • 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

  • Sample Cylinder Valves

    Restek

    Alta-Robbins' unique valve design incorporates a fully contained soft seat that provides durability and longer lifetime. Tight shut-off is easily achieved with very low torque, yet the valve is rugged enough to withstand overtightening. Multiple valve configurations are available for both…

  • 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,…

  • Extraction Cell Caps & Replacement Parts for ASE Systems

    Restek

    Accelerated solvent extraction is a common technique for fast and reliable extraction of organic materials from solid matrices, using EPA SW-846 Method 3545, Pressurized Fluid Extraction (PFE). Restek offers a wide range of replacement parts to keep your extraction system running smoothly. All…

  • 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…

  • Resprep-C18 and Resprep-C8 SPE Disks

    Restek

    Glass fiber disks embedded with C18 or C8 bonded silica Extract semivolatile organic compounds Deep-pore design reduces clogging and allows faster flow rates Meet requirements for EPA Methods 525.1, 506, 550.1, and 549.1 Lower cost than PTFE disks

  • 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

  • Replacement Fittings for Grab Sampling Kits

    Restek

    Includes fitting and orifice.

  • 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 +/–…

  • 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…

  • 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…

  • 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…

  • 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…

  • 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.

  • Celite 503

    MilliporeSigma

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

  • Replacement Orifices

    Restek

    Use these orifices with a Veriflo 423XL flow controller to change the flow range for alternative sampling times.

  • 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…

  • 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

  • TO-Can Air Sampling Canisters with RAVE Valve

    Restek

    Optimized for Methods TO-14A, TO-15, IP-1A, ASTM D5466, OSHA PV 2120, and NJ DEP Low Level TO-15 Proprietary electropolished surface maintains compound stability. High-quality, metal-to-metal seal, 2/3-turn valve with stainless steel diaphragms prevent sample adsorption for more-accurate…

  • 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…

  • 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…

  • 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…

  • Calibration Thermal Desorption 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…

  • 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…

  • 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…

  • Retaining Ring Pliers for ASE 100/200/300 Systems

    Restek

    Can be used for internal or external retaining rings Works to remove retaining ring in all ASE cell caps

  • 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…

  • Alicat M-Series Flow Calibrators

    Restek

    Quickly and precisely verify flow rates generated by vacuum or pressure before going into the field. These compact, convenient units are ideal for real-time calibration of air flow controllers, passive sampling kits, air canisters, sampling pumps, and more. They measure absolute pressure, mass…

  • 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

  • Replacement Septum for Gas Sampling Bags

    Restek

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

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