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 PES 47mm 0.80u S 100pk
Microporous Filter PES Diameter 47mm Pore Size 0 80um 100/pk Sterile
Waters Corp Waters Solvent Filter, PTFE CR, 47 mm, 0.2 μm
The PTFE CR Solvent Filter extracts and filters potent solvents and organics. Featuring a hydrophobic PTFE membrane on a polypropylene support, it's ideal for non-aqueous, organic, highly acidic, or basic samples. HPLC-certified, it ensures low extractables and superior analytical filtering. Verified compatible with typical HPLC solvents, it provides reliable performance for life science, pharmaceutical, R&D, QC, and environmental applications, but is not cleared for clinical use.
- Hydrophobic PTFE membrane: recommended for non-aqueous, organic, acidic, or basic samples.
- HPLC-certified: guarantees low extractables and superior filtering.
- Advanced separation technology: ensures precise pore size for enhanced instrument and column protection.
- Consistent analytical outcomes: provides consistent results across different lots.
Alkali Scientific CellPro™ MCE Membrane Filter with Grid, 47mm, 100/Pk, 0.22 μm
CellPro™ MCE Membrane Filter with Grid, 47mm, 100/Pk, 0.22 μm. Ideal for filtration applications in laboratories, this 47mm membrane filter offers precise pore sizes to effectively filter and separate samples. Used in microbiology and environmental analysis, it provides high-quality filtration for accurate results.