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
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.02 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
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
Foxx Life Sciences EZLabpure™ Cellulose Nitrate CN Hydrophilic Membrane Filters, 0.22µm, 142mm Diameter Filtration Membrane Discs, Non Sterile, 25/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
Foxx Life Sciences EZLabpure™ Nylon Hydrophilic Membrane Filters, 1.2µm Pore Size, 293mm Diameter Filtration Membrane Discs, Non Sterile, 25/PK
EZLabpure™ Nylon Hydrophilic Membrane Filters are engineered for reliable particle retention, sample clarification, and broad chemical compatibility in laboratory applications. These Nylon membrane filter discs provide excellent mechanical strength, consistent flow rates, and dependable performance for aqueous and organic solutions. Available in 0.22 um, 0.45 um, 0.8 um, and 1.2 um pore sizes, and offered in 13 mm, 25 mm, 47 mm, 90 mm, 142 mm, and 293 mm diameters, all variants are supplied non-sterile. All components comply with USP Class VI Standards, ensuring material safety and consistent filtration quality.
The filtration membrane discs are recommended for particle removing filtration for water, aqueous solutions and solvents for analytical determinations such as HPLC, and filtration of these liquids. These filters are hydrophilic and suitable for HPLC sample preparations, sterile filtration of aqueous and solvent solutions, and clarification and particle removal.
Foxx Life Sciences EZBio Rigid Reservoir for Tangential Flow Filtration (TFF) System, PP, 115L Rectangular Welded Carboy, 120mm, VersaCap with Rigid tubing 3x Maxi TC on 3/8"ID x 1/2"OD Tubing & 1x 3/8"HB with Bottom Drain Mini TC, Non-Sterile, 1/CS
The EZBio SUT Rigid Reservoir System is a single-use rigid bioprocess carboy and bottle solution for fluid handling, supporting upstream and downstream processes. It provides a sterile, closed, scalable platform with integrated rigid tubing for secure, kink-free transfer of buffers, media, process fluids.
Available in 1L–115L volumes (PP bottles/carboys), it features VersaCap technology with customizable 2–5 ports (Mini/Maxi TC options) & bottom Tri-Clamp port for efficient drainage. Plug-and-play integration simplifies setup, reduces contamination risk, and speeds workflows.
Features
Made from USP Class VI materials, gamma-sterilizable, autoclavable (15 PSI, 20 min at 121°C)
Rigid dip tube with notch to allow for easy filling and extraction of media
Bottom TC for quick media harvest
Laser marked ports for quick identification
Multi-port cap system
Applications
Bioprocess storage, aseptic transfer
Cell Harvest
Closed collection system
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.
Biodesign Inc of Ny CellMicroSieves Sampler Pack (1 each 20, 15, 10, 8, 5 micron pore sheets 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™ Polypropylene PP Hydrophilic Membrane Filters, 0.45µm Pore Size, 90mm Diameter Filtration Membrane Discs, Non Sterile, 25/PK
EZLabpure™ Polypropylene PP Hydrophilic Membrane Filters are designed for efficient particle retention, sample clarification, and routine laboratory filtration applications. Featuring high-quality PP hydrophilic membranes, these membrane filter discs provide strong chemical compatibility and reliable flow performance for aqueous solutions. 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 membrane filter discs are supplied non-sterile and comply with USP Class VI Standards for safe use in research and analytical environments.
These Filtration Disc Membranes are a preferred choice for HPLC applications. This plastic polymer has good resistance to a broad range of chemicals even at high temperatures, making it adaptable for applications ranging from air filtration. They are suitable for aqueous and organic solvent filtration, depth filtration, sterilizing gases, and trapping aqueous aerosols, and air and gas venting.
Alkali Scientific CellPro™ MCE (Mixed Cellulose Ester) Membrane Filter, 100/Pk, 90 mm, 0.22 μm
CellPro™ MCE (Mixed Cellulose Ester) Membrane Filters are high performance filtration membranes commonly used in laboratory and industrial applications for microbiological analysis, particle monitoring, and air/water testing. These filters are composed of a blend of cellulose acetate and cellulose nitrate, combining the strengths of both materials for reliable and consistent performance. Key Features: High Porosity (up to 80–85%): Ensures fast flow rates and high throughput. Uniform Pore Structure: Provides accurate and consistent retention of microorganisms and particles. Hydrophilic Nature: Eliminates the need for pre wetting with surfactants; ideal for aqueous solutions. Low Extractables: Minimizes contamination risks in sensitive analyses. Smooth, White Surface (or Gridded Options): Makes it easy to visually inspect and count colonies during microbiological testing.