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
Azzota Corp MPF CN-CA 47mm 0.22u 100pk St
Microporous Filter CN-CA Diameter 47mm Pore Size 0 22um Sterile 100/pk
Foxx Life Sciences EZLabpure™ Cellulose Nitrate CN Hydrophilic Membrane Filters, 0.8µm, 47mm Diameter Filtration Membrane Discs, Non Sterile, 50/PK
EZLabpure™ Cellulose Nitrate CN Hydrophilic Membrane Filters designed for efficient particle retention, sample clarification, and microbiological applications. Featuring high-quality cellulose nitrate membranes, these membrane filter discs deliver consistent flow rates and reliable performance for laboratory filtration. Available in 0.22 um, 0.45 um, 0.8 um pore sizes, and offered in 25 mm, 47 mm, 90 mm, 142 mm, and 293 mm diameters. All membrane filter discs are supplied non-sterile and comply with USP Class VI Standards.
These Filtration Disc Membranes are used for applications involving aqueous solutions. Featuring narrow pore size distribution, these filters ensure improved surface capture and analysis with low levels of extractables, making them a reliable choice for particle counting in liquids and aerosols. These support a wide range of laboratory filtration, microbiological testing, and general sample preparation applications
Tisch Scientific PTFE Disk Filters, NO PreFilter, 0.22um, 50mm, step barb: 5/16 to 1/2, Nonsterile
Tisch PTFE (Polytetrafluoroethylene) disk filters are hydrophobic and chemically resistant to all solvents, acids, and bases. This NO PRE FILTER are ideal for use in equipment protection as they block water vapor. PTFE Disk filters are commonly used to assist in protection of work areas from airborne pathogens and hazardous vacuum pump exhaust or venting. They can also be used for filtering aggressive solvents in volumes beyond standard syringe filter capacity, venting carboys and filling culture vessels and CO2 incubators, and filtration applications that involve bacterial retention.
Tisch Scientific Nylon Membrane Filter, 10.0 µm, 47 mm, Nonsterile, 200 Pack, SF14756
Tisch nylon membrane filters are naturally hydrophilic, have high non-specific binding properties, and an extractable level of <0.0015 mg/cm^2, they are ideal for HPLC solvent and sample preparation.
Sigma Aldrich Fine Chemicals Biosciences Mf MilliporeR Membrane fil
Biologically inert mixtures of cellulose acetate and cellulose nitrate have made Mf-Millipore membrane filters one of the most widely used membranes in analytical and research applications. Mf-Millipore filters without Triton surfactant contain minimum amounts of wetting agent and have a lower water extractable content than standard Mf-Millipore filters.features Benefits - Versatile filter for biological and environmental monitoring applications - Available in a range of pore sizes colored black or white with or without a gridded surface - Compatible with ethylene oxide gamma irradiation and autoclave sterilization methods
Foxx Life Sciences EZFlow Nylon Hydrophilic Membrane Filters, 0.22um, 25mm Diameter Filter Discs, 50/PK
364-2212-OEM: EZFlow Membrane Disc Filter, 0.22um Nylon, 25mm, 50pk. EZFlow 13mm, 25mm, 47mm, and 90mm membrane disc filters are used to retain particles or microorganisms by surface capture. The membrane disc filters are available in Nylon or Hydrophobic PTFE with polypropylene support, in 0.2um or 0.45um pore sizes. The Nylon membrane has great chemical resistance, and is ideal for filtering more aggressive solutions such as alcohols and DMSO. The Hydrophobic PTFE membrane is bonded to a polypropylene support. Due to its extreme chemical compatibility, they are ideal for the filtration of solvents and acids, or other aggressive chemicals. All materials comply with USP Class VI Standards and FDA compliances.
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.
IW Tremont Co Inc LabExact Mixed Cellulose Esters, 0.45 micron, hydrophilic sterile, gridded, 47mm biologically inert mixture of cellulose acetate & cellulose nitrate create membrane with a smoother, more uniform surface than nitrocellulose pack of 100
LabExact Mixed Cellulose Ester (MCE) - Sterile and biologically inert mixtures of cellulose acetate and cellulose nitrate result in membranes with a smoother and more uniform surface than pure nitrocellulose. Gridded. Easy to handle, less cracking and fracturing than traditional cellulose nitrate membranes. A pure surface with no additional smoothing treatment or surfactants. Certified for the microbiological analysis of potable, waste, process, and natural waters in accordance with the Membrane Filter Technique referenced in Standard Methods for the Examination of Water and Wastewater., 20th edition, and the U.S. EPA's Microbiological Methods for Monitoring the Environment, 600/8-78-017. Suitable for air monitoring applications and meets NIOSH requirements for airborne metals and asbestos monitoring.
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.
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