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
Perkin Elmer US LLC Santoprene Two-Stop Peristaltic Pump Tubing - 1.30 mm I.D., Gray/Gray, Pkg. 12
This Santoprene™ Two-Stop Pump Tubing is for use with the standard pump in Optima, Avio, and NexION 300/350 series instruments. This tubing ships as a package of 12.
Tisch Scientific Nylon Membrane Filter, 3.0 µm, 150 mm, Nonsterile, 50 Pack, SF17989
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.
Sterlitech Corporation Polycarbonate (PCTE) Membrane Filters, 0.01 Micron, 25mm, 100/Pk
Polycarbonate (PCTE) Membrane Filters, 0.01 Micron, 25mm, 100/Pk
Tisch Scientific Nylon Membrane Filter, 10.0 µm, 47 mm, Nonsterile, 200 Pack, SF14756
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.
Sterlitech Corporation Polyethersulfone (PES) Membrane Filters, 1.2 Micron, 25mm, 100/Pk
POLYETHERSULFONE (PES) MEMBRANE FILTERS, 1.2 MICRON, 25MM, 100/PK
Sterlitech Corporation PTFE Unlaminated Membrane Filters, 10.0 Micron, 25mm, 50/Pk
PTFE MEMBRANE FILTERS, UNLAMINATED, 10.0 MICRON, 25MM, 50/PK
Sterlitech Corporation Polyethersulfone (PES) Membrane Filters, 0.2 Micron, 25mm, 100/Pk
POLYETHERSULFONE (PES) MEMBRANE FILTERS, 0.2 MICRON, 25MM, 100/PK
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.
Cole-Parmer Advantec A020G047A Sterile MCE Filters, 0.20um, 47mm Dia; 100/Pk
Mixed cellulose ester membranes are suitable for microbiological analysis of water, wastewater, pharmaceuticals, or beverages. Offered with or without grid lines; grid lines facilitate counting colonies on the membrane surface. Grid squares measure 3.1 mm and represent 1/100 of the area of a 47-mm membrane. Black membranes maximize contrast between colonies and the filter; green membrane enables viewing of black, white, and colorless colonies on a single filter. Presterilized by EtO, these 47-mm diameter filters are available in envelopes of 10, individually packaged, or now individually wrapped continuous feed. Order membranes with absorbent pad for use with broth media.
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 Polyester (PETE) Membrane Filters, 0.1 Micron, 47mm, 100/Pk
Polyester (PETE) Membrane Filters, 0.1 Micron, 47mm, 100/Pk
Sterlitech Corporation Polyester (PETE) Membrane Filters, 8.0 Micron, 25mm, 100/Pk
Sterlitech polyester track etch (PETE) membrane filters, 8 micron pore size, 25 mm diameter, pack of 100. Hydrophilic, solvent resisant film for blood assays, microscopy, and highly caustic samples.
