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Sample Preparation, Chromatography

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  • Visiprep™ Large Volume Sampler for use with 3 or 6 mL SPE tubes (includes 4…

    Sigma-Aldrich

    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…

  • Extrelut Nt Packing Material For The Production Of Large Extraction Columns

    EMD Millipore

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

  • Celite 503

    EMD Millipore

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

  • Celite 281

    EMD Millipore

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

  • Celite 545 Particle Size 0.02-0.1 mm

    EMD Millipore

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

  • Celite Hyflo Supercel

    EMD Millipore

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

  • Extrelut Nt Refill Pack For Column Fillings Extrelut Nt 20

    EMD Millipore

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

  • 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

  • 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

  • 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

  • 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…

  • 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…

  • 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…

  • 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 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…

  • Filter Insertion Attachments for ASE 100/200/300

    Restek

    ASE 100/300 (For use with 10 mL-, 34 mL-, 66 mL-, and 100 mL-size cell bodies.) ASE 200 (For use with 5 mL-, 11 mL-, 22 mL-, and 33 mL-size cell bodies.)

  • Diskcover-47 Reservoir

    Restek

    The Diskcover-47 open-top reservoir allows you to pour up to 125 mL of sample directly onto the filter disk holder. It easily installs on top of the Diskcover-47 extraction disk holder. *Must be used with the Diskcover-47 extraction disk holder.

  • 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…

  • 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

  • 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…

  • 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 …

  • Empty Centrifuge Tubes, Polypropylene

    Restek

  • 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

  • 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…

  • 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…

  • 30mm Filters for ASE 100/300 Extraction Cells

    Restek

    Cellulose or glass fiber construction

  • Resprep SPE Flow Filters

    Restek

    Designed specifically to improve flow when filtering oil and grease samples Use with Resprep Diskcover-47 reservoir, or any 47 mm glass sample reservoir

  • 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

  • Tubing Assembly for ASE 200/300 Systems

    Restek

    Great value and improved design Eliminates the need for the adaptor fitting on the static and purge valves

  • 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…

  • 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…

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