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 0.45u S 100pk
Microporous Filter CN-CA Diameter 47mm Pore Size 0 45um Sterile 100/pk
Azzota Corp MPF CN-CA 47mm 0.22u 100pk St
Microporous Filter CN-CA Diameter 47mm Pore Size 0 22um Sterile 100/pk
Sigma Aldrich Fine Chemicals Biosciences PVC Membrane filter 5.0
Polyvinylidene chloride (PVC) membranes are specified by ASTM NIOSH and OSHA in air monitoring applications to analyze silica carbon black metals quartz particulates and others..filters composed of pure medical-grade PVC .Use for air monitoring applications to analyze silica carbon black or quartz particulates .Available in 5.0 181m filters features Benefits.High-quality medical-grade PVC polymer .PVC is non-hygroscopic so humidity will not impact your gravimetric analysis ApplicationsAir Monitoring of Particulate Contaminants Including Silica Metals and Quartz
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.2 Micron, 25mm, 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
Sterlitech Corporation Polyester (PETE) Membrane Filters, Transparent, 0.4 micron, 12 Micron Thickness, 2E6 pores/cm2, 90mm, 30/pack
Sterlitech solvent resistant, hydrophilic polyester track etch (PETE) membranes are made from a thin, translucent, microporous, polyester film and are ideal for use in blood assays, microscopic analysis, and the general filtration of samples.PETE Membrane Filter Applications:* Precise General Filtration and Prefiltration* Removal of red blood cells from plasma* Flow control of reagents through assay
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.