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
Meissner STyLUX Hydrophilic PES Filter
Meissner STyLUX Hydrophilic PES Filter, 47mm Disc, 0.2µm, 12.4cm² EFA, Non-Sterile
Ted Pella Inc ULTRATHIN QFOIL 1.2UM 100GRIDS
Ultrathin Carbon on Quantifoil, Orthogonal Array of 1.2µm Diameter Holes - 1.3µm Separation, mounted on a 300M Cu grid, package of 100 grids
ELKO FILTERING CO NYLON MESH 41 MICRON 1YD
Nylon Monofilament Precision Woven Mesh - 41 Micron Opening, Open Area 31%, 40 Inch wide, Sold by Yard - Available from 1 - 5000 Microns - Sefar 03-41/31
Tisch Scientific NYLON MEMBRANE FILTERS
Tisch nylon membrane filters are naturally hydrophilic, have high non-specific binding properties, and an extractable level of <0.0015 mg/cm^2, they are ideal for HPLC solvent and sample preparation.
Cole-Parmer Spectra/Mesh 148145 Screen Discs, 47 mm, Nylon, 100 µm, pack of 10
There are four material options to choose from. The nylon mesh filters out particles down to 8 µm. These are ideal for finer macrofiltration needs and are suitable with all aqueous solutions. Polypropylene (PP) mesh offers strength and stability, while also being resistant to most acids, alkalies, and alcohols. These screens are autoclavable. The PEEK mesh holds its shape and features superior chemical resistance. These are ideal for general filtration, are resistant to acidic and alkaline solutions, and feature temperature stability up to 250°C. The 304 Stainless Steel woven discs or sheets are ideal for high differential pressure applications as they are durable and feature extra strength.
Tisch Scientific NYLON MEMBRANE FILTERS
Tisch nylon membrane filters are naturally hydrophilic, have high non-specific binding properties, and an extractable level of <0.0015 mg/cm^2, they are ideal for HPLC solvent and sample preparation.
Tisch Scientific Polypropylene Membrane Filters, 0.45um, 25mm, Nonsterile, 200 per pack
Polypropylene Membrane Filters, 0.45um, 25mm, Nonsterile, 200 per pack
Tisch Scientific MCE Membrane Filters
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.
Grainger Membrane Filter 47 mm 0.45 um PK1000
The Grainger 14A849 Glass Microfiber Filter, 1.6 μm, 5.5 cm Diameter, Pack of 100 is a pack of 100 glass microfiber filters with a pore size of 1.6 microns and a diameter of 5.5 cm. These high-quality binder-free borosilicate glass filters are designed for a variety of laboratory filtration applications including HPLC sample preparation, IC sample filtration, solvent filtration and air monitoring. Their low metal extractables make them ideal for trace metal analysis. The filters have >98% particle retention down to their rated pore size.
Azzota Corp Microporous Filter, Ptfe, Diameter: 47mm, Pore Size: 0.45um, 100/Pk
Microporous Filter, PTFE, Diameter: 47mm, Pore Size: 0.45um, 100/pk
Microsolv Technology Corporation Filter Memb .45 Ptfe 47Mm 100P
Filters, Membrane, 47mm, 0.45um, PTFE. Round, AQ Brand. 100/PK.