Filtration Membrane Discs
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
Fisherbrand™ Polyethersulfone Membranes
Fisherbrand™ Polyethersulfone Membranes features highly asymmetrical pore structure that offers effective loading capacity and high flow rate.
Promotions are available
Fisherbrand™ Mixed Cellulose Ester Membranes Sterile Filter
Fisherbrand™ Mixed Celluloses Esters Membranes Sterile Filters are composed of cellulose acetate and cellulose nitrate.
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Sartorius Gridded Sterile Cellulose Nitrate Membrane Filters: 0.65μm
Membrane Filters for Colony Counting, Particle Testing and Microscopy - Cellulose nitrate (cellulose ester), gridded, individually, sterile packaged
Merck MF-Millipore™ Membrane Filter, 0.65 μm
MF-Millipore™ Membrane Filter composed of mixed cellulose esters (MCE) membrane, hydrophilic.
Sartorius Polycarbonate Track Etch Membrane Filters
Manufactured from high grade polycarbonate film using track-etch technology.
Sartorius™ 11306 Series Non-Sterile Cellulose Nitrate (CN) Membrane Filters
11306 Series Non-Sterile Cellulose Nitrate (CN) Membrane Filters are hydrophilic, have high flow rates thanks to their symmetrical structure, and are compatible with aqueous solutions (pH 4 – 8), hydrocarbons, and several other organic solvents.
Sartorius Polyamide (Nylon) Membrane Filters
Recommended for particle-removing filtration of water, aqueous solutions and solvents for analytical determination. Sartorius Polyamide (Nylon) Membrane Filters are white, non-sterile filters without grids. Choose from two pore sizes in four diameters. Bulk packed for space and cost savings.
Merck MF-Millipore™ Membrane Filter, 0.45 μm
MF-Millipore™ Membrane Filter are mixed cellulose esters (MCE) membrane, hydrophilic.
Fisherbrand™ PTFE Filter Membranes
Fisherbrand™ PTFE membrane is hydrophobic filter made of polytetra-fluorethylene laminated with PP layer.
Promotions are available
Fisherbrand™ Cellulose Membranes
Suitable for Clarification and sterilizing filtration of biological fluids . Fisherbrand™ Cellulose Membranes filters are composed of pure cellulose acetate modified to offer researchers the lowest binding filters available.
Promotions are available
Cytiva Whatman™ Nylon Membranes
Flexible and durable for easier handling. Cytiva Nylon Membranes are naturally hydrophilic, eliminating need for wetting agents and prewetting when filtering aqueous solutions.
Promotions are available
Sartorius Stedim Biotech™ Nitrocellulose Membrane for Blotting
Sartorius Stedim Biotech™ Nitrocellulose Membrane for Blotting combines the advantages of high protein binding capacity with low background and high membrane stability.
Sartorius™ 11301 Series Non-Sterile Cellulose Nitrate (CN) Membrane Filters
11301 Series Non-Sterile Cellulose Nitrate (CN) Membrane Filters are hydrophilic, have high flow rates thanks to their symmetrical structure, and are compatible with aqueous solutions (pH 4 – 8), hydrocarbons, and several other organic solvents.