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
Cytiva (Formerly Pall Lab) GN-6 Metricel MCE Membrane Disc Filters - 85 mm, grid, gamma-irradiated (not individually packed) (50/pkg)
The GN-6 membrane is certified for the microbiological analysis of potable, waste, process, and natural waters in accordance with the Membrane Filter Technique referenced in Standard Methods for the Examination of Water and Wastewater.-For microbiological analysis-Mixed cellulose ethers-Easy bacterial quantificationIdeal for isolation and enumeration of total and fecal coliforms, Ecoli, fecal Streptococcus, fungi, and other heterotrophic bacteria.GN-6 grids have a unique dot grid pattern that provides easy quantification of bacterial colonies without growth inhibition or enhancement. GN-4 membranes dissolve completely using standard digestion procedures, and clear completely for minimal interference in fiber counting.Ordering information: GN-6 is available gamma irradiated, individually packaged (except filter model 60016) or nonsterile, bulk packed. This product is not approved for use in medical, clinical, surgical or other patient applications.
GLOBAL LIFE SCIENCES SOLUTIONS USA LLC SENTINO DISP ME25 .45UM 1000PK
502538113 SENTINO DISP ME25 .45UM 1000PK
GLOBAL LIFE SCIENCES SOLUTIONS USA LLC MEMB.GR STER. GN6 0.45UM 47MM
NC3497255 MEMB.GR STER. GN6 0.45UM 47MM
Cytiva GN-6 Metricel Membrane Disc Filter - 0.45 µm, 25 mm, Plain (100/pkg)
The GN-6 membrane is certified for the microbiological analysis of potable, waste, process, and natural waters in accordance with the Membrane Filter Technique referenced in Standard Methods for the Examination of Water and Wastewater.-For microbiological analysis-Mixed cellulose ethers-Easy bacterial quantificationIdeal for isolation and enumeration of total and fecal coliforms, Ecoli, fecal Streptococcus, fungi, and other heterotrophic bacteria.GN-6 grids have a unique dot grid pattern that provides easy quantification of bacterial colonies without growth inhibition or enhancement. GN-4 membranes dissolve completely using standard digestion procedures, and clear completely for minimal interference in fiber counting.Ordering information: GN-6 is available gamma irradiated, individually packaged (except filter model 60016) or nonsterile, bulk packed. This product is not approved for use in medical, clinical, surgical or other patient applications.
Cytiva GN-6 Metricel Membrane Disc Filter - 0.45 µm, 47 mm, Gridded (100/pkg)
The GN-6 membrane is certified for the microbiological analysis of potable, waste, process, and natural waters in accordance with the Membrane Filter Technique referenced in Standard Methods for the Examination of Water and Wastewater.-For microbiological analysis-Mixed cellulose ethers-Easy bacterial quantificationIdeal for isolation and enumeration of total and fecal coliforms, Ecoli, fecal Streptococcus, fungi, and other heterotrophic bacteria.GN-6 grids have a unique dot grid pattern that provides easy quantification of bacterial colonies without growth inhibition or enhancement. GN-4 membranes dissolve completely using standard digestion procedures, and clear completely for minimal interference in fiber counting.Ordering information: GN-6 is available gamma irradiated, individually packaged (except filter model 60016) or nonsterile, bulk packed. This product is not approved for use in medical, clinical, surgical or other patient applications.