Sample Preparation, Chromatography

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Sample Preparation, Chromatography

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  • 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,…

  • 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…

  • 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 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…

  • 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…

  • 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…

  • 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

  • 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 +/–…

  • 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.

  • 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 SPE Cartridges (Normal Phase)

    Restek

    Hydrophilic (polar) adsorbents used to extract hydrophilic analytes from nonpolar matrices, such as organic solvents (e.g., polar contaminants from sample extracts). All cartridges are manufactured using high density polypropylene and have polyethylene frits unless otherwise noted. Cartridges…

  • 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…

  • 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

  • Aura Personal Air Sampler Kits

    Restek

    New personal air sampling technology designed to meet OSHA and NIOSH requirements for industrial hygiene applications Quiet, robust sampler does not require a pump and manages variations in face velocity, temperature, and humidity better than traditional sampling approaches Easy to…

  • 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…

  • 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…

  • Canister Air Sampling Timer

    Restek

    These timers are designed to simplify both automated and manual air sampling. The easy-to-use keypad and graphic display facilitate the programming of up to 12 timed events. They offer the convenience of remote start/stop sampling and permit intermittent sampling throughout a test period. The LCD…

  • 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…

  • Aura Personal Air Samplers

    Restek

    Disposable 8-Hour Sampler Lines

  • Air Canister Tripod

    Restek

    Restek’s air canister tripod holds two canisters simultaneously for collocated ambient air sampling. The custom-designed bracket holds most 1, 3, and 6L canisters* securely without any tools. Lightweight (12 lb) and compact for easy storage and transport Extends from 6' to 9'…

  • 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…

  • 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…

  • Diatomaceous Earth (Bulk Adsorbent)

    Restek

    Diatomaceous earth is used as a filter aid to improve extraction efficiency of densely packed soils, such as clays. By mixing the sample with diatomaceous earth, recoveries can be improved and excess moisture can be absorbed. Packaged in a convenient 1 kg quantity. Improves extraction…

  • Easy-VOC Grab Sampler

    Restek

    Perfect for fast and simple grab sampling of small air volumes (50–500mL) directly into sorbent tubes* Easy, instant sample collection with no complicated pumps to calibrate or maintain Convenient to use anywhere, just attach a sorbent tube to the end of the handheld unit and draw a…

  • 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…

  • 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;…

  • Replacement Septum for Gas Sampling Bags

    Restek

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

  • 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…

  • Resprep CarboPrep SPE Cartridges

    Restek

    CarboPrep cartridges are manufactured from chromatographic-grade, nonporous, graphitized carbon. Our manufacturing process minimizes variability and improves recovery and cleanup procedures. We offer two types of carbons: CarboPrep 90 has a surface area of approximately 90 m 2 /g, and CarboPrep…

  • 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

  • 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…

  • Pesticide Residue Cleanup SPE Cartridges

    Restek

    Convenient, multiple adsorbent beds in a single cartridge For use in multiresidue pesticide analysis to remove matrix interferences Excellent for cleanup of dietary supplement extracts

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