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
Sterlitech Corporation Nylon Membrane Filters, 0.45 Micron, 47mm, 100/Pk
Nylon membrane disc filters: 0.45 µm pore-size, 47 mm diameter, pack of 100. Hydrophilic, low-extractable, inert, durable material supported by an internal polyester web. Typically used for HPLC, microbiology, medical/clinical, and general filtration.
Polyscience polycool MIX -25 (Case)
PolyScience™ PolyScience°polycool MIX -25-25 to 100°C Temperature RangeCase of 5 x 1/2 gallon (1.9 L) BottlesFeatures:• Optimizes performance in refrigerated products; protects against freezing. Keeps reservoir clean
Sterlitech Corporation Polyethersulfone (PES) Membrane Filters, 1.2 Micron, 47mm, 100/Pk
Sterlitech PES (polyethersulfone) membrane filters, 1.2 micron pore size, 47 mm diameter, pack of 100. Hydrophilic, low protein/drug binding, minimal extractables, and broad chemical tolerance; ideal for pharmaceutical, medical, and life science applications.
SCP Science DigiFILTER 1.0 Micron, 98% Particle Retention, Vacuum-Assisted Filtration, 100/PK
The DigiFILTER 1.0 micron is designed for efficient filtration of wastewater, soil, and other challenging samples, enhancing laboratory productivity by preventing clogging and ensuring sample integrity for trace metal analysis. Its hydrophilic Teflon membrane guarantees 98% particle retention, making it ideal for high-throughput processing. This vacuum-assisted assembly is compatible with 50 mL tubes, providing a reliable solution for clean sample preparation in analytical applications.
Sterlitech Corporation Nylon Membrane Filters, 0.45 Micron, 25mm, 100/Pk
Nylon membrane disc filters: 0.45 µm pore-size, 25 mm diameter, pack of 100. Hydrophilic, low-extractable, inert, durable material supported by an internal polyester web. Typically used for HPLC, microbiology, medical/clinical, and general filtration.
Boca Scientific Inc Mobicol filters (large/upper), 10µm pore size, 50/pack
This filter (large/upper) has a 10 µm pore size and is designed for use with Mobicol M1002, M1003, M1050 and M1053. 50 filters are included.
Sterlitech Corporation PTFE Unlaminated Membrane Filters, 0.45 micron, 25mm, 50/Pk
PTFE MEMBRANE FILTERS, UNLAMINATED, 0.45 MICRON, 25 MM, 50/PK
Azzota Corp Microporous Filter, NYLON, Diameter: 47mm, Pore Size: 0.22um, 100/pk
Microporous Filter, NYLON, Diameter: 47mm, Pore Size: 0.22um, 100/pk.
Tisch Scientific Nylon Membrane Filter, 0.45 µm, 47 mm, Sterile, 200 Pack, SF18013
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 Nylon Membrane Filters, 0.2 Micron, 142mm, 25/Pk
Nylon membrane disc filters: 0.2 µm pore-size, 142 mm diameter, pack of 25. Hydrophilic, low-extractable, inert, durable material supported by an internal polyester web. Typically used for HPLC, microbiology, medical/clinical, and general filtration.
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.