Filtration Membrane Discs
Thin, precut membrane rounds for high-throughput, fast filtration of liquid and gas samples. Gridded and non-gridded discs. Various materials including mixed cellulose ester, polycarbonate, PTFE, nylon, and PVDF. For air monitoring/analytical research.
Sizes
Filter membranes are made in a range of diameters, typically designed to fit a specific holder or manifold.
Materials
Filter membrane can be made from cellulose, mixed cellulose esters (MCE), polyvinylidene fluoride (PVDF), polyethersulfone (PES), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), nylon, polycarbonate (PC), polyester, polyethylene terephthalate (PET), and polypropylene (PP). Other membrane materials include aluminum oxide, gelatin, porcelain, and glass.
Pore Size
The size of membrane pores determines which particles will be retained by the filter. A pore size of 0.2 µm is small enough to remove microbes from solutions; a 0.45 µm ore size can remove larger particulates.
Color and Grids
White membrane filters may be plain or marked with square grids (outlined in black) that can help with enumerating particles. Gridded or plain black membrane filters may be helpful when filtering light-colored particulates.
Sterility
Filter membranes may be pre-sterilized or may be sterilized using ethylene oxide, gamma irradiation, or autoclaves. The need for sterility is determined by the application, which are many and varied:
- Light microscopy samples
- Cytology sample preparation
- Electron microscopy samples
- Air quality and other environmental monitoring
- Water analysis and water quality testing
- Microbiology colony counting and quality control
- Chemotaxis
- Sterile preparation of buffers, tissue culture media, microbiological media, and other biological fluids
Sigma Aldrich Fine Chemicals Biosciences Nylon filter membranes por
Nylon filters are naturally hydrophilic and no wetting agents are used in manufacture.With an extractable level 0.0015Amg/cm2 they are ideal for HPLC solvent and sample preparation. Because of high non-specific binding they are not recommended for protein SOLUTIONons.Compatible with aqueous and most organic solventsAutoclavable unaffected by temperatures up to 180C
Perkin Elmer US LLC Trap Filter Discs, Pkg. 10
For use with PerkinElmer TurboMatrix Thermal Desorption Instruments.
Cole-Parmer Stuart WOLFFHUEGAL DISCS 10/PK
Features a robust die-cast body to prevent traveling while on, and has an integrated port to support a lab rod for holding vessels in place during continuous operation. The variable-speed allows more control—use at 200 rpm for more gentle mixing, all the way up to 2500 rpm for vigorous agitation. Additionally, choose between "touch" on or continuous modes. The accessory pack of heads (sold separately) lets you mix in a standard microplate, a beaker or flask (up to 500 mL), eight 0.2-/0.5-mL microtubes, sixteen-1.5 mL microcentrifuge tubes, or make your own custom holder with the blank foam.
Chemglass Life Sciences Fritted Disc, 10mm, Medium
Fritted Disc, 10mm, Medium. Porous discs for use in fabrication of special glass apparatus. Fritted glassware is designed for low pressure vacuum filtration or gas flow. The MAX differential pressure should not exceed 15 PSI. Fritted glassware should not be exposed to excessive temperature change or direct exposure to flame due to the fact that it has less resistance to thermal shock than standard borosilicate glassware.
ANALYTICAL SCIENTIFIC INSTRUMENTS US INC 1.2UM TUNGSTEN PARTICLES 50 GR
NC3002621 1.2UM TUNGSTEN PARTICLES 50 GR
Chemglass Life Sciences Fritted Disc, 35mm, Medium
Fritted Disc, 35mm, Medium. Porous discs for use in fabrication of special glass apparatus. Fritted glassware is designed for low pressure vacuum filtration or gas flow. The MAX differential pressure should not exceed 15 PSI. Fritted glassware should not be exposed to excessive temperature change or direct exposure to flame due to the fact that it has less resistance to thermal shock than standard borosilicate glassware.
Chemglass Life Sciences Fritted Disc, 30mm, Coarse
Fritted Disc, 30mm, Coarse. Porous discs for use in fabrication of special glass apparatus. Fritted glassware is designed for low pressure vacuum filtration or gas flow. The MAX differential pressure should not exceed 15 PSI. Fritted glassware should not be exposed to excessive temperature change or direct exposure to flame due to the fact that it has less resistance to thermal shock than standard borosilicate glassware.
Chemglass Life Sciences Fritted Disc, 20mm, Medium
Fritted Disc, 20mm, Medium. Porous discs for use in fabrication of special glass apparatus. Fritted glassware is designed for low pressure vacuum filtration or gas flow. The MAX differential pressure should not exceed 15 PSI. Fritted glassware should not be exposed to excessive temperature change or direct exposure to flame due to the fact that it has less resistance to thermal shock than standard borosilicate glassware.
Azzota Corp Microporous Filter, Pvdf, Diameter: 25mm, Pore Size: .45um, 200/Pk
Microporous Filter, PVDF, Diameter: 25mm, Pore Size: .45um, 200/pk