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
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
Hach Company Filter, Membrane, Pore Size 0.45 µm, Diameter 25 mm, 100/pk
For use in a wide-range of laboratory applications, these discs are composed of Mixed-Cellulose Esters and are the industry standard for particulate removal, particulate analysis and clarification of fluids. Diameter: 25mm. Pore Size: 0.45um. 100/PK.
Cole-Parmer Stuart WOLFFHUEGAL DISCS 10/PK
Features a robust die-cast body to prevent traveling while on, and has an integrated port to support a lab rod for holding vessels in place during continuous operation. The variable-speed allows more control—use at 200 rpm for more gentle mixing, all the way up to 2500 rpm for vigorous agitation. Additionally, choose between "touch" on or continuous modes. The accessory pack of heads (sold separately) lets you mix in a standard microplate, a beaker or flask (up to 500 mL), eight 0.2-/0.5-mL microtubes, sixteen-1.5 mL microcentrifuge tubes, or make your own custom holder with the blank foam.
Sterlitech Corporation Polyester (PETE) Membrane Filters, 0.4 Micron, 47mm, 100/Pk
Sterlitech polyester track etch (PETE) membrane filters, 0.4 micron pore size, 47 mm diameter, pack of 100. Hydrophilic, solvent resisant film for blood assays, microscopy, and highly caustic samples.
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.02 Micron, 25mm, 10/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, 3.0 Micron, 12 Micron Thickness, 6E5 pores/cm2, 13mm, 100/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
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.1 Micron, 25mm, 10/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 Aluminum Oxide Membrane Filters, 0.1 Micron, 13mm, 10/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, Hydrophobic, Nonwoven Support, 0.2 Micron, 13mm, 100/Pk
Hydrophobic PETE membrane filters are a great option for venting applications where PTFE or polyolefin membrane filters have traditionally been utilized.Applications:* Vent filters for electrical enclosures* Vent filters for microbial retention in medical devices* Air/gas filtration while repelling liquid water* Air/gas filtration while repelling oils and solvents with surface tension >25 dynes/cm
Sterlitech Corporation Polycarbonate (PCTE) Membrane Filters, Black, 0.8 Micron, 25mm, 100/pk
These hydrophilic, polycarbonate track-etch (PCTE) membrane filters have been pigmented using black dye to minimize membrane autofluorescence. The dyed PCTE membrane filters are ideal for use with fluorescence microscopy analyses that involve direct observation and enumeration of animal cells or microorganisms that have been labeled with fluorescent markers. They are also suitable for optical microscopy studies of light colored particles and microorganisms by providing a dark background for enhanced contrast.
Sterlitech Corporation Aluminum Oxide Membrane Filters, 0.02 Micron, 13mm, 10/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 Aluminum Oxide Membrane Filters, 0.02 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 Aluminum Oxide Membrane Filters, 0.02 Micron, 47mm, 10/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