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
Foxx Life Sciences EZLabpure™ Nylon Hydrophilic Membrane Filters, 1.2 µm Pore Size, 90mm Diameter Filtration Membrane Discs, Non Sterile, 25/PK
EZLabpure™ Nylon Hydrophilic Membrane Filters are engineered for reliable particle retention, sample clarification, and broad chemical compatibility in laboratory applications. These Nylon membrane filter discs provide excellent mechanical strength, consistent flow rates, and dependable performance for aqueous and organic solutions. Available in 0.22 um, 0.45 um, 0.8 um, and 1.2 um pore sizes, and offered in 13 mm, 25 mm, 47 mm, 90 mm, 142 mm, and 293 mm diameters, all variants are supplied non-sterile. All components comply with USP Class VI Standards, ensuring material safety and consistent filtration quality.
The filtration membrane discs are recommended for particle removing filtration for water, aqueous solutions and solvents for analytical determinations such as HPLC, and filtration of these liquids. These filters are hydrophilic and suitable for HPLC sample preparations, sterile filtration of aqueous and solvent solutions, and clarification and particle removal.
Ace Glass, Inc. 1.950" 210 micron polypropylene filter for #50 threaded adapters. Pkg/12.
1.950" 210 micron polypropylene filter for #50 threaded adapters. Pkg/12.
Ace Glass, Inc. 90mm straight tubes with 10-20 micron fritted discs, for construction of special apparatus.
90mm straight tubes with 10-20 micron fritted discs, for construction of special apparatus.
Foxx Life Sciences EZLabpure™ Mixed CE(Cellulose Ester) Hydrophilic Membrane Filters, 0.45µm Pore Size, 47mm Diameter Membrane Filter Discs, Non Sterile, 50/PK
EZLabpure™ Mixed Cellulose Ester (MCE) Hydrophilic Membrane Filters are biologically inert and one of the most widely used membranes in research applications. With a smoother, more uniform surface than pure nitrocellulose filters, these membrane filter discs deliver superior flow rates and can withstand autoclaving up to 130°C without adversely affecting bubble point, flow rate, or microbiological recovery. Widely used for sterilizing biological fluids, microbiological testing, and analytical applications, these non-sterile membrane filter disc are available in 0.22 um, 0.45 um, and 0.8 um pore sizes across 13 mm, 25 mm, 47 mm, and 90 mm diameters with packaging options of 25/PK, 50/PK, and 100/PK. These Filtration Disc Membranes are biologically inert and one of the most widely used membranes in research applications