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
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.
Alkali Scientific CellPro™ Cellulose Acetate (CA) Membrane Filter, 100/Pk, 90 mm, 0.22 μm
CellPro™ Cellulose Acetate (CA) Membrane Filter is a filter medium made of cellulose acetate as the main material. Cellulose acetate is a polymer material with excellent physical and chemical stability, widely used in the field of filtration and separation. CA membrane filter is formed into a filter layer with a specific pore and structure through a precise manufacturing process, which can effectively intercept impurities such as suspended particles, microorganisms, colloids, etc. in the liquid. Application • Biomedicine: used for filtering cell culture fluids, removing microorganisms and impurities, and ensuring a pure growth environment for cells. • Food and Beverage: filtering juices, beverages and other liquids, removing suspended particles and microorganisms, and improving product clarity and safety. • Laboratory Research: used for filtering various liquids in scientific research experiments to meet the requirements of experiments for liquid purity. Fe
Meissner SteriLUX Hydrophilic PVDF Filter
Meissner SteriLUX Hydrophilic PVDF Filter, 47mm Disc, 0.2µm, 12.4cm² EFA, Non-Sterile
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.
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.2 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
Meissner STyLUX Hydrophilic PES Filter
Meissner STyLUX Hydrophilic PES Filter, 47mm Disc, 0.1µm, 12.4cm² EFA, Non-Sterile
Foxx Life Sciences EZLabpure™ PVDF Hydrophilic Membrane Filters, 0.45µm Pore Size, 142mm Diameter Filtration Membrane Discs, Non Sterile, 25/PK
EZLabpure™ PVDF Hydrophilic Membrane Filters designed for high-performance sample clarification and sterile filtration of aqueous and protein-sensitive solutions. Manufactured with premium polyvinylidene fluoride (PVDF) membranes, these membrane filter discs provide low protein binding, excellent chemical resistance, and consistent flow rates for laboratory applications. Available in 0.22 um and 0.45 um pore sizes, and offered in 13 mm, 25 mm, 47 mm, 90 mm, and 142 mm diameters, all variants are non-sterile for research and analytical use. All filters are non-sterile and comply with USP Class VI Standards.
These Filtration Membrane Disc Filters have excellent water wettability, providing high flow rate. PVDF membranes are naturally hydrophobic but are modified to a hydrophilic nature, making them useful for a wide range of applications, both aqueous and non-aggressive solvents-based. These membranes are typically low protein binding and are used for sterilizing filtration.