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
Hach Company Filter, Membrane, Cellulose, Pore Size 0.8 µm, Diameter 47 mm, 100/pk, plain, non-sterile
Pall GN-4 Metricel membrane filters are made of mixed cellulose esters. Non-sterile, 0.8µm Disc Filters are suitable for air monitoring applications and meets NIOSH requirements for airborne metals and asbestos monitoring. Dissolves completely using standard digestion procedures, and clears completely for minimal interference in fiber counting. Pall GN Metricel Membrane Disc Filters autoclavable.
Sigma Aldrich Fine Chemicals Biosciences S-PAK FLTR MEMBRANE 47MM
NC2110658 S-PAK FLTR MEMBRANE 47MM
Grainger Membrane Filter 47 mm 0.45 um PK600
The LabExact Membrane Filter is a 47mm diameter hydrophilic polyethersulfone membrane filter with 0.45μm pore size. It has low protein binding and is compatible with aqueous and organic solvents. The polyethersulfone membrane is sterilized by gamma irradiation. This filter is well-suited for analytical sample preparation including HPLC mobile phase filtration and clarification and sterilization of aqueous and organic solutions. It has a high flow rate and loading capacity. The polyethersulfone construction provides thermal, chemical and mechanical stability.
Sterlitech Corporation Sterlitech Silver Membrane, 0.2 Micron, 25mm, 50/Pk
Sterlitech Silver Membrane, 0.2 Micron, 25mm, 50/Pk
Tisch Scientific MCE Membrane Filter, 0.22 µm, 293 mm, Nonsterile, 25 Pack, SF14676
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.
Foxx Life Sciences EZFlow Hydrophobic PTFE Membrane Filters, 0.45um, 25mm Diameter Filter Discs, 50/PK
365-3212-OEM: EZFlow Membrane Disc Filter, 0.45um Hydrophobic PTFE, 25mm, 50/pack. EZFlow 13mm, 25mm, 47mm, and 90mm membrane disc filters are used to retain particles or microorganisms by surface capture. The membrane disc filters are available in Nylon or Hydrophobic PTFE with polypropylene support, in 0.2um or 0.45um pore sizes. The Nylon membrane has great chemical resistance, and is ideal for filtering more aggressive solutions such as alcohols and DMSO. The Hydrophobic PTFE membrane is bonded to a polypropylene support. Due to its extreme chemical compatibility, they are ideal for the filtration of solvents and acids, or other aggressive chemicals. All materials comply with USP Class VI Standards and FDA compliances.
Foxx Life Sciences EZFlow Nylon Hydrophilic Membrane Filters, 0.22um, 47mm Diameter Filter Discs, 50/PK
364-2612-OEM: EZFlow Membrane Disc Filter, 0.22um Nylon, 47mm, 50pk. EZFlow 13mm, 25mm, 47mm, and 90mm membrane disc filters are used to retain particles or microorganisms by surface capture. The membrane disc filters are available in Nylon or Hydrophobic PTFE with polypropylene support, in 0.2um or 0.45um pore sizes. The Nylon membrane has great chemical resistance, and is ideal for filtering more aggressive solutions such as alcohols and DMSO. The Hydrophobic PTFE membrane is bonded to a polypropylene support. Due to its extreme chemical compatibility, they are ideal for the filtration of solvents and acids, or other aggressive chemicals. All materials comply with USP Class VI Standards and FDA compliances.
Foxx Life Sciences EZFlow Hydrophobic PTFE Membrane Filters, 0.45um, 90mm Diameter Filter Discs, 25/PK
365-3811-OEM: EZFlow Membrane Disc Filter, 0.45um Hydrophobic PTFE, 90mm, 25/pack. EZFlow 13mm, 25mm, 47mm, and 90mm membrane disc filters are used to retain particles or microorganisms by surface capture. The membrane disc filters are available in Nylon or Hydrophobic PTFE with polypropylene support, in 0.2um or 0.45um pore sizes. The Nylon membrane has great chemical resistance, and is ideal for filtering more aggressive solutions such as alcohols and DMSO. The Hydrophobic PTFE membrane is bonded to a polypropylene support. Due to its extreme chemical compatibility, they are ideal for the filtration of solvents and acids, or other aggressive chemicals. All materials comply with USP Class VI Standards and FDA compliances.
Foxx Life Sciences EZFlow Hydrophobic PTFE Membrane Filters, 0.22um, 47mm Diameter Filter Discs, 50/PK
365-2612-OEM: EZFlow Membrane Disc Filter, 0.22um Hydrophobic PTFE, 47mm, 50/pack. EZFlow 13mm, 25mm, 47mm, and 90mm membrane disc filters are used to retain particles or microorganisms by surface capture. The membrane disc filters are available in Nylon or Hydrophobic PTFE with polypropylene support, in 0.2um or 0.45um pore sizes. The Nylon membrane has great chemical resistance, and is ideal for filtering more aggressive solutions such as alcohols and DMSO. The Hydrophobic PTFE membrane is bonded to a polypropylene support. Due to its extreme chemical compatibility, they are ideal for the filtration of solvents and acids, or other aggressive chemicals. All materials comply with USP Class VI Standards and FDA compliances.
Chemglass Life Sciences Fritted Disc, 10mm, Medium
Fritted Disc, 10mm, Medium. Porous discs for use in fabrication of special glass apparatus. Fritted glassware is designed for low pressure vacuum filtration or gas flow. The MAX differential pressure should not exceed 15 PSI. Fritted glassware should not be exposed to excessive temperature change or direct exposure to flame due to the fact that it has less resistance to thermal shock than standard borosilicate glassware.