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
Sterlitech Corporation PTFE Unlaminated Membrane Filters, 0.45 micron, 25mm, 50/Pk
PTFE MEMBRANE FILTERS, UNLAMINATED, 0.45 MICRON, 25 MM, 50/PK
YSI 3P LifeScience Methanol Membranes, 4 each
Methanol Membranes. Used to measure methanol on YSI 2900 Series Analyzers.
Sterlitech Corporation Polycarbonate (PCTE) Membrane Filters, 3.0 Micron, 47mm, 100/Pk
Polycarbonate Track Etch (PCTE) membranes are made from a thin, microporous polycarbonate film material. It is ideally suited for use in blood assays and high-purity and general filtration.
Tisch Scientific Nylon membrane roll stock, 0.22 um, 300mm (width) x 3m (length), with PET substrate, RS10233
Nylon membrane roll stock, 0.22um, 300mm (width) x 3m (length) with PET substrate
This product has not been established as a suitable replacement for N95 mask material or any other PPE application. In addition, please be aware that we are not able to accept any returned products.
Tisch Scientific MCE Membrane Filter, 5.0 µm, 47 mm, Nonsterile, 200 Pack, SF14634
Tisch MCE membrane filters are developed from a mixture of cellulose acetate and cellulose nitrate and are one of the most widely used filters in both air monitoring and analytical applications.
Sterlitech Corporation Nylon Membrane Filters, 5.0 Micron, 90mm, 25/Pk
Nylon Membrane Filters, 5.0 Micron, 90mm, 25/Pk
Sterlitech Corporation PTFE Unlaminated Membrane Filters, Hydrophilic, 0.5 Micron, 47mm, 100/Pk
Durable, efficient, and broadly compatible, these pure, hydrophilic PTFE membranes are ideal for use with HPLC seperations, aqueous/organic solvents, and many of your other filtration needs. Pack of 100. Pore size: 0.50 microns. Diameter: 47 mm. Advantec P/N: H050A047A.
Thomas Scientific Prefilters, 5uM GMF, 47mm, 50/Pk.
ValuSep 5um Glass Micro Fiber (GMF) prefilters are made of two separate layers of glass fiber in a very thin format for highly efficient capture and retention of particles that could prematurely clog an SPE filter.