Chromatography Sample Preparation
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SafeLok Sorbent Tubes
RestekFeature 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…
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Q-sep Tube Racks
RestekAvailable 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
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Large Volume SPE Reservoir
MilliporeSigmaRetention Mechanisms: Lipid matrix is retained via normal phase, hydrophobic, and Lewis acid-Lewis base interactions Sample Matrix Compatibility: Oils Dual layer SPE that contains both LC-Florisil® (upper layer) and Z-Sep/C18 (lower layer) SPE sorbents, separated by a PE frit …
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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;…
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Cellulose or glass fiber construction Fit 11 mL, 22 mL, and 33 mL cells Cellulose filters available in economical 1,000-packs
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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…
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Anhydrous sodium sulfate is the most common drying agent used to remove moisture from sample extracts. We package our 10-60 mesh material in recloseable buckets. Ideal for removing water from sample extracts Activate by heating to 400°C for four hours before use Packaged in…
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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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Single-stage, stainless steel Two pressure gauges and CGA-180 fitting Stainless steel diaphragm and Kel-F seat Accurate pressure control even at low flow rates Individually tested for leaks and impurities
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High capacity, fully automated, easy-to-use canister cleaning oven dramatically increases lab efficiency. TO-Clean from Restek is a revolutionary canister cleaning system designed to take the guesswork out of canister cleaning. The system is fully automated, allowing the user to start a cleaning…
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Chemker Vacuum Pumps
RestekPTFE wetted parts are highly resistant to corrosive gases Diaphragm-based pump is low maintenance and virtually pollution free 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…
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The Restek Cleaned Polyurethane Foam (PUF) Cartridges offers the following features: Use for collection of semivolatiles (pesticides, PCBs, PAHs) Both large high-volume (220–280 L/min) and small low-volume (1–5 L/min) PUFs available Suitable for ambient, indoor, and industrial hygiene…
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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. …
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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…
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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…
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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…
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ALTEF Gas Sampling Bags
RestekSampling 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…
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0–300 psig inlet pressure range 0–15 psig outlet pressure range Supplied with 0–15 psig outlet pressure gauge, brass CGA 170 nut and nipple, and 1/8-inch compression outlet
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Rocker accessories for 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…
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Attach quick-connect body fitting to stem fitting to open canister. Attach quick-connect stem protector to stem fitting when not sampling to prevent canister from accidentally opening. Connection: 1/4" tube fitting. Note: Quick-connect body fitting (cat.# 24187) must be ordered separately…
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Sample Inlets
RestekInlets 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
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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
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Ultra-Clean Resin
RestekEquivalent 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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Celite 545 Particle Size 0.02-0.1 mm
MilliporeSigmaCAS No.: 68855-54-9 pH: 10 (100 g/l, H2O, 20°C) Solubility: Bulk Density: 300 kg/m3
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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…
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Celite Hyflo Supercel
MilliporeSigmaCAS No.: 68855-54-9 pH: 10 (100 g/l, H2O, 20°C) Solubility: Bulk Density: 300 kg/m3
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Allows switching from pressure to vacuum in a matter of seconds. Quiet, oil-free unit will not contaminate the extraction system or your samples. Provides 20" Hg (68 kPa) vacuum or 18 psi (124 kPa) pressure. Not recommended for use with 24-port manifold. Warranty period is one year from…
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1/16" fittings, 1mm ID, for "W Type" valves Ideal for samples containing low concentrations of sulfur or other active compounds Sample loop sizes from 5 µL to 5 mL Sulfinert treatment eliminates active sites in the valve or loop for better recovery of active compounds.
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2-inch vacuum/pressure gauges, 316 stainless steel with 1/8" NPT fitting and center back mount. Recommended for use with canisters.
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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. …