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,…

  • 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…

  • 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. …

  • 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

  • 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 +/–…

  • 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…

  • 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…

  • Replacement Orifices

    Restek

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

  • 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.

  • 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…

  • 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…

  • Grab Passive Air Sampling Kits

    Restek

    Use with 1, 3, or 6 L canisters for grab air sampling Variety of orifice sizes for fast sampling from 5 to 60 minutes Connect 1/4" compression fitting directly to canister valve inlet Replaceable frit protects orifice and valve from particulates Sample inlet design minimizes water…

  • 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…

  • 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

  • TO-Can Air Sampling Canisters with Swagelok SS4H Bellows Valve

    Restek

    ?Proprietary electropolished surface that maintains compound stability. High quality, Bellows-design valve. Now also available with new RAVE valve. U.S. EPA Methods TO-14A and TO-15 regulate the collection, storage, and analysis of volatile organic compounds (VOCs) using treated air…

  • 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…

  • 30mm Filters for ASE 100/300 Extraction Cells

    Restek

    Cellulose or glass fiber construction

  • Replacement Septum for Gas Sampling Bags

    Restek

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

  • radiello™ Empty Storage Tubes

    MilliporeSigma

    Used for storing Radiello Cartridge Adsorbents before and after diffusive sampling.

  • 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…

  • Empty 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…

  • 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…

  • 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…

  • 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…

  • 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

  • 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

  • Ashcroft Gauge Connector to Canister Valve

    Restek

    Ashcroft Gauge Connector to Canister Valve, stainless steel, connects 1/4" male NPT to 1/4" male compression fitting

  • 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

  • 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…

  • Metering Control Valves

    Restek

    Reduces pressure between sample cylinder and GC injector Maintains fine metering control Contains Kel-F seat

  • 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…

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