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
Ace Glass, Inc. #50 Ace-Thred solid nylon plug, 7855-744 FETFE O-ring front seal
#50 Ace-Thred solid nylon plug with front seal O-ring, for sealing column ends. Permits preparation and storage of columns. Supplied with size -225 FETFE O-ring.
Ace Glass, Inc. 1.312" 210 micron polypropylene filter for #50 threaded adapters. Pkg/12.
1.312" 210 micron polypropylene filter for #50 threaded adapters. Pkg/12.
Microsolv Technology Corporation Filter Memb .22 Ptfe 47Mm 100P
Filters, Membrane, 47mm, 0.22um, PTFE. Round, AQ Brand. 100/PK.
Azzota Corp Microporous Filter, Nylon, Diameter: 13mm, Pore Size: 0.45um, 200/Pk
Microporous Filter, NYLON, Diameter: 13mm, Pore Size: 0.45um, 200/pk
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.
Hach Company Millipore S-Pak Type HC Membrane Filters, 47 mm, 0.7 um pore size, pk/150
Certified for fecal coliform analysis. Larger pore size (0.7 um) and funnel-like pores creates a less taxing environment for stressed organisms: lessens media loss from evaporation and easier filtration of high particulate samples common to effluents. Whi
Foxx Life Sciences EZLabpure™ Polypropylene PP Hydrophilic Membrane Filters, 0.45µm Pore Size, 47mm Diameter Membrane Filter Discs, Non Sterile, 50/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.