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
Sigma Aldrich Fine Chemicals Biosciences Nylon filter membranes por
Nylon filters are naturally hydrophilic and no wetting agents are used in manufacture.With an extractable level 0.0015Amg/cm2 they are ideal for HPLC solvent and sample preparation. Because of high non-specific binding they are not recommended for protein SOLUTIONons.Compatible with aqueous and most organic solventsAutoclavable unaffected by temperatures up to 180C
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.
Sterlitech Corporation Polyester (PETE) Membrane Filters, 1.0 Micron, 25mm, 100/Pk
Sterlitech polyester track etch (PETE) membrane filters, 1 micron pore size, 25 mm diameter, pack of 100. Hydrophilic, solvent resisant film for blood assays, microscopy, and highly caustic samples.
Sterlitech Corporation Sterlitech Silver Membrane, 5 Micron, 47mm, 25/Pk
SILVER MEMBRANE FILTERS, 5.0 MICRON, 47MM, 25/PK
Ace Glass, Inc. Fritted disc, 47mm OD, porosity A (145-174 micron), fits3702-10
47mm O.D. Porosity A (145-174 micron) fritted disc.
Azzota Corp Microporous Filter, Pvdf, Diameter: 47mm, Pore Size: .22um, 100/Pk
Microporous Filter, PVDF, Diameter: 47mm, Pore Size: .22um, 100/pk
Azzota Corp Microporous Filter, Pvdf, Diameter: 47mm, Pore Size: .45um, 100/Pk
Microporous Filter, PVDF, Diameter: 47mm, Pore Size: .45um, 100/pk
ANALYTICAL SCIENTIFIC INSTRUMENTS US INC 1.2UM TUNGSTEN PARTICLES 50 GR
NC3002621 1.2UM TUNGSTEN PARTICLES 50 GR