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
Cytiva Acrodisc One ™ Syringe Filters with wwPTFE Membrane - 0.45µm, 25mm, 50/pk
Acrodisc One ™ Syringe Filters with wwPTFE Membrane - 0.45µm, 25mm, 50/pk
Sterlitech Corporation Polyethersulfone (PES) Membrane Filters, 0.2 Micron, 47mm, 100/Pk
Sterlitech PES (polyethersulfone) membrane filters, 0.2 micron pore size, 47 mm diameter, pack of 100. Hydrophilic, low protein/drug binding, minimal extractables, and broad chemical tolerance; ideal for pharmaceutical, medical, and life science applications.
US Plastic Corporation 8.3 oz. Wide Mouth Round HDPE Jars with 53/400 Cap, 364/case
These wide mouth round jars are great for samples and can be used for liquids, pastes, and powders.
Sterlitech Corporation Nylon Membrane Filters, 0.45 Micron, 47mm, 100/Pk
Nylon membrane disc filters: 0.45 µm pore-size, 47 mm diameter, pack of 100. Hydrophilic, low-extractable, inert, durable material supported by an internal polyester web. Typically used for HPLC, microbiology, medical/clinical, and general filtration.
Tisch Scientific Nylon Membrane Filter, 0.45 µm, 47 mm, Nonsterile, 200 Pack, SF13880
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.
Acuderm Inc 8MM BIOPSY PUNCHES PK/25
8mm Acu-Punch, Box of 25 Acu-Punch� is the ONLY disposable punch made in the U.S.A. Acu-Punch� is always razor sharp and ready to use. The handle is ribbed for maximum control, even when wearing gloves. Features: Always Sharp Always Sterile Ergonomic Design Ribbed for maximum control
Cole-Parmer Advantec A020G047A Sterile MCE Filters, 0.20um, 47mm Dia; 100/Pk
Mixed cellulose ester membranes are suitable for microbiological analysis of water, wastewater, pharmaceuticals, or beverages. Offered with or without grid lines; grid lines facilitate counting colonies on the membrane surface. Grid squares measure 3.1 mm and represent 1/100 of the area of a 47-mm membrane. Black membranes maximize contrast between colonies and the filter; green membrane enables viewing of black, white, and colorless colonies on a single filter. Presterilized by EtO, these 47-mm diameter filters are available in envelopes of 10, individually packaged, or now individually wrapped continuous feed. Order membranes with absorbent pad for use with broth media.
Sterlitech Corporation Nylon Membrane Filters, 0.45 Micron, 25mm, 100/Pk
Nylon membrane disc filters: 0.45 µm pore-size, 25 mm diameter, pack of 100. Hydrophilic, low-extractable, inert, durable material supported by an internal polyester web. Typically used for HPLC, microbiology, medical/clinical, and general filtration.
Sterlitech Corporation Nylon Membrane Filters, 0.2 Micron, 142mm, 25/Pk
Nylon membrane disc filters: 0.2 µm pore-size, 142 mm diameter, pack of 25. Hydrophilic, low-extractable, inert, durable material supported by an internal polyester web. Typically used for HPLC, microbiology, medical/clinical, and general filtration.
Sterlitech Corporation Polyethersulfone (PES) Membrane Filters, 1.2 Micron, 47mm, 100/Pk
Sterlitech PES (polyethersulfone) membrane filters, 1.2 micron pore size, 47 mm diameter, pack of 100. Hydrophilic, low protein/drug binding, minimal extractables, and broad chemical tolerance; ideal for pharmaceutical, medical, and life science applications.