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
Biodesign Inc of Ny CellMicroSieves Sampler Pack (1 each 50, 35, 25, 215, 8 micron pore sheet of 12 by 12 inches)
CellMicroSieves (TM) filters manufactured by BioDesign Inc of New York allow the separation of multiple cell types using a filter that will not bind cells or proteins. Eleven pore sizes are available in sheets (3 sheets of 12 by 12 inches per package), rolls (2 feet by 3 feet), and 47mm circles (10 per package) that are extremely useful for specific cell type separation, stem cell isolation, hybridoma production, collection of cells from media, and many other uses where a strong non-binding specific sized pore filter is needed. Can be repeatedly steam sterilized retaining its pore size. A pure nylon thread product with no extractable materials that is specifially made for biologial research.
Foxx Life Sciences EZLabpure™ PES Hydrophilic Membrane Filters, 0.45µm Pore Size, 47mm Diameter Membrane Filter Discs, Non Sterile, 50/PK
EZLabpure™ PES Hydrophilic Membrane Filters designed for efficient sample clarification, sterile filtration of aqueous solutions, and reliable particle retention in laboratory applications. Featuring high-quality polyethersulfone (PES) membranes, these filter discs provide excellent flow rates, low protein binding, and consistent performance. These PES membrane filter discs are available in 0.22 um and 0.45 um pore sizes, and offered in 13 mm, 25 mm, 47 mm, and 90 mm diameters, all variants are supplied non-sterile for research and analytical use. All components comply with USP Class VI Standards, ensuring safety and material compatibility for laboratory environments.
These filtration membrane discs offer very low protein affinity, high permeability, long operational lifespan due to its high throughput, and minimal extractable levels. Their hydrophilic surface enables efficient performance across a wide range of liquid media and dry gas streams.
Alkali Scientific ProCycle™ Pre-cut Sealing Membranes, Sterile, qPCR Optical (sticky adhesive film) Bio-Rad™ Type, 10 bags of 10 membranes
RNase, DNase, DNA, and PCR inhibitor free Evaporation rates ≤ 5% Inner packs of 10 membranes PureAmp™ Sealing Membranes are compatible with all standard PCR plates. Membrane options include pierceable aluminum, standard transparent, optically clear sticky adhesive, optically clear pressure-sensitive adhesive, and low-adhesive EZ-peel, all of which are guaranteed to keep evaporation rates below 5%.
Cole-Parmer Sterile CA/Glass Prefilter Syringe Filters, 0.22um/26mm; 50/Box
Filters are Triton-free and have a bidirectional membrane support and luer lock inlet/outlet for a secure fit to the syringe. Membrane type and pore size are printed on each filter for easy identification. All Cole-Parmer syringe filters are 100% integrity tested and manufactured in accordance with ISO 9002 standards. Sterile filters are sterilized by gamma radiation. They are certified nonpyrogenic, noncytotoxic, and are blister packed.
Hach Company Replacement: COUPLER, PTFE, 47MM
Replacement Coupler for Xenosep SPE Systems Apparatus. PTFE. 47 mm.
Foxx Life Sciences EZLabpure™ CA Hydrophilic Membrane Filters, 0.8µm, 47mm Diameter Filtration Membrane Discs, Non Sterile, 50/PK
EZLabpure™ Cellulose Acetate CA Hydrophilic Membrane Filters are designed for efficient particle retention, sample clarification, and routine laboratory filtration of aqueous solutions. Manufactured with high-quality CA membranes, these membrane filter discs provide low protein binding, excellent flow rates, and reliable performance for analytical and research applications. Available in 0.2 um, 0.45 um, and 0.8 um pore sizes, and offered in 25 mm, 47 mm, and 90 mm diameters. All components comply with USP Class VI Standards, ensuring material safety and consistent filtration quality.
These Filtration Membrane Disc Filters combine high flow rates with very low absorption characteristics. These filters are suitable for sterile filtration of culture media, microbe-retentive and particle-removing filtration of nutrient media, water and solutions, and cell harvesting
Sterlitech Corporation Polycarbonate (PCTE) Membrane Filters, PVP-Free, 1.0 Micron, 25mm, 100/Pk
Polycarbonate (PCTE) Membrane Filters, PVP-Free, 1.0 Micron, 25mm, 100/PkPrecisely controlled cylindrical pores for maximum absolute particulate captureTransparent, smooth flat surface for microscopic workLowest, non-specific binding membraneNarrow pore size distributionNo sloughing or particle shedding, one integral plastic filmNegligible adsorption or absorptionLow extractables
Andwin Scientific SUPOR 450 PES .45U 47MM 100/PK
The Supor Membrane Disc Filter has a pore size of 0.45 m and a diameter of 47 mm. This product has a hydrophilic polyethersulfone membrane that features high flow rate, low protein binding, and low extractables. It is stronger than other types of membranes, namely acetate and nitrate. This product also features a very high water flow fluid filtration capacity. This is sold in a pack of 100.