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
Chemglass Life Sciences Fritted Disc, 10mm, Fine
Fritted Disc, 10mm, Fine. 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, Coarse
Fritted Disc, 20mm, 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, 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.
CELLTREAT Scientific Products Glass Fiber Filter Disk, Prefilter, Binder Free, 1.0m, 70mm, Sterile, 50/CS
CELLTREAT Scientific Products Glass Fiber Filter Disk, Prefilter, Binder Free, 1.0¿m, 70mm Diameter. Glass Fiber Filter Disks are an ideal prefilter to prevent clogging when filtering viscous or particulate-laden solutions with CELLTREAT Scientific Products vacuum Filter Systems and Bottle Top Filters. Increase filtration speed by removing larger particles prior to sterilizing filtration. Glass Fiber material. RNase/DNase free and non-pyrogenic. Every case is printed with the lot number for quality traceability. Packaged sterile, individually wrapped, 50/case.
Essendant Economical Easy Assembly Storage Files, Letter Files, White, 12/Carton
Features heavy-duty construction for lasting box strength. Works with or without shelving for versatile storage. Secure string and button closure keeps documents dust/dirt free.
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.1 Micron, 47mm, 10/pk
Aluminum oxide membranes feature uniform, densely-packed honeycomb pore structures that contribute to precise retention and high porosity characteristics.Applications:* HPLC sample and mobile phase filtration* Filtration of aggressive organic solvents* Virus concentration and analysis* Analysis of micro plastic in water* Epifluorescence microscopy* Synthesis of nanostructures (e.g. nanotubes)Features:* Fast filtration, efficient separation and high purity* High number of tightly controlled pores in honeycomb shape* Free of organic extractables and leachables* Minimum adsorption* Transparent when wet
Sterlitech Corporation Polyester (PETE) Membrane Filters, 5.0 Micron, 25mm, 100/Pk
Sterlitech polyester track etch (PETE) membrane filters, 5 micron pore size, 25 mm diameter, pack of 100. Hydrophilic, solvent resisant film for blood assays, microscopy, and highly caustic samples.
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.1 Micron, 13mm, 50/pk
Aluminum oxide membranes feature uniform, densely-packed honeycomb pore structures that contribute to precise retention and high porosity characteristics.Applications:* HPLC sample and mobile phase filtration* Filtration of aggressive organic solvents* Virus concentration and analysis* Analysis of micro plastic in water* Epifluorescence microscopy* Synthesis of nanostructures (e.g. nanotubes)Features:* Fast filtration, efficient separation and high purity* High number of tightly controlled pores in honeycomb shape* Free of organic extractables and leachables* Minimum adsorption* Transparent when wet
Sterlitech Corporation Polyester (PETE) Membrane Filters, 10.0 Micron, 90mm, 30/Pk
Sterlitech polyester track etch (PETE) membrane filters, 10 micron pore size, 90 mm diameter, pack of 30. Hydrophilic, solvent resisant film for blood assays, microscopy, and highly caustic samples.
Sterlitech Corporation Polyester (PETE) Drain Disc, 293mm, 25/Pk
These Polyester Drain Discs increase flow rate and throughputs by preventing blockage or "pore blinding" of the capillary pores in screen membranes.
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.2 Micron, 25mm, 50/pk
Aluminum oxide membranes feature uniform, densely-packed honeycomb pore structures that contribute to precise retention and high porosity characteristics.Applications:* HPLC sample and mobile phase filtration* Filtration of aggressive organic solvents* Virus concentration and analysis* Analysis of micro plastic in water* Epifluorescence microscopy* Synthesis of nanostructures (e.g. nanotubes)Features:* Fast filtration, efficient separation and high purity* High number of tightly controlled pores in honeycomb shape* Free of organic extractables and leachables* Minimum adsorption* Transparent when wet
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.2 Micron, 25mm, 10/pk
Aluminum oxide membranes feature uniform, densely-packed honeycomb pore structures that contribute to precise retention and high porosity characteristics.Applications:* HPLC sample and mobile phase filtration* Filtration of aggressive organic solvents* Virus concentration and analysis* Analysis of micro plastic in water* Epifluorescence microscopy* Synthesis of nanostructures (e.g. nanotubes)Features:* Fast filtration, efficient separation and high purity* High number of tightly controlled pores in honeycomb shape* Free of organic extractables and leachables* Minimum adsorption* Transparent when wet
Microsolv Technology Corporation Filter Memb .22 Nylon 47Mm 100
Filters, Membrane, 47mm, 0.22um, Nylon. Round, AQ Brand. 100/PK.
Microsolv Technology Corporation Filter Memb .45 Nylon 47Mm 100
Filters, Membrane, 47mm, 0.45um, Nylon. Round, AQ Brand. 100/PK.
Hach Company Filter, Membrane, Pore Size 0.45 µm, Diameter 47 mm, 200/pk, without pad
These 47-mm diameter, 0.45-µm pore size GN-Metricel membrane filters meet or surpass all U.S. Environmental Protection Agency (USEPA) and American Society for Testing and Materials (ASTM) specifications to ensure complete retention and maximum recovery of bacteria. 200/pk, without pad. Gelman/Pall.Black membranes for yeast and mold are also available. Black membranes make yeast and mold colonies more distinct and easier to count. Filters are available in convenient, presterilized, individually sealed packs (P/N 1353001 and 2490300) or in resealable envelopes with 10 filters and 10 absorbent pads each (P/N 2126900). Phosphate free.