Chromatography Sample Preparation
-
-
Cellulose or glass fiber construction Fit 11 mL, 22 mL, and 33 mL cells Cellulose filters available in economical 1,000-packs
-
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…
-
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…
-
Celite 503
MilliporeSigmaCAS No.: 68855-54-9 pH: 10 (100 g/l, H2O, 20°C) Solubility: Bulk Density: 300 kg/m3
-
1/4” Diaphragm Valves, RAVE+
RestekExclusive polymer-free construction means no sample contamination from off-gassing or target compound loss due to adsorption. Durable, roller-hardened valve port threads provide superior performance—and every valve is helium leak tested to 1x10 -6 mL/sec. Rugged, work-hardened, proprietary,…
-
-
PEEK Washers for ASE Systems
RestekMeet original equipment manufacturer’s performance Available in various quantities
-
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…
-
Vacuum Gauges
RestekHigh-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.
-
Extrelut Nt Refill Pack For Column Fillings Extrelut Nt 20
MilliporeSigmaCAS No.: 68855-54-9 pH: 10 (100 g/l, H2O, 20°C) Solubility: Bulk Density: 300 kg/m3
-
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,…
-
Humidification Chamber
RestekWhen cleaning SilcoCan or TO-Can canisters, it is important to use humidified air or nitrogen to help remove volatile organic contaminants. Restek's humidification chamber is made of acrylic and withstands pressure up to 90 psi. The 1/4-inch inlet and outlet compression fittings allow easy…
-
Ashcroft Test Gauges
RestekHigh-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 +/–…
-
Florisil PR (Bulk Adsorbent)
RestekFlorisil 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
-
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…
-
Ottawa Sand (Bulk Adsorbent)
RestekOttawa 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
-
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
-
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…
-
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…
-
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 SPE Flow Filters
RestekDesigned specifically to improve flow when filtering oil and grease samples Use with Resprep Diskcover-47 reservoir, or any 47 mm glass sample reservoir
-
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
-
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. …
-
Chromatographic Spray
Ace GlassDelivers a true aerosol with no droplets. Enables thorough brushing for uniform development. Spray action begins at .028m3 per minute air flow. Atomization rate approximately 10cc per minute. Easily controlled with thumb pressure on vent hole. Suction stem is 125mm long.
-
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…
-
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…
-
Cleaned, assembled, and ready to use Clear or amber glass Caps and PTFE-lined septa included
-
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;…
-
2-inch vacuum/pressure gauges, 316 stainless steel with 1/8" NPT fitting and center back mount. Recommended for use with canisters.
-
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…