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 Polyester (PETE) Membrane Filters, Hydrophobic, Nonwoven Support, 0.2 Micron, 13mm, 100/Pk
Hydrophobic PETE membrane filters are a great option for venting applications where PTFE or polyolefin membrane filters have traditionally been utilized.Applications:* Vent filters for electrical enclosures* Vent filters for microbial retention in medical devices* Air/gas filtration while repelling liquid water* Air/gas filtration while repelling oils and solvents with surface tension >25 dynes/cm
Sterlitech Corporation Polycarbonate (PCTG) Gold-Coated Membrane Filters, 0.8 Micron, 40/20nm Coating, 47mm, 10/Pk
POLYCARBONATE (PCTG) GOLD-COATED MEMBRANE FILTERS, 0.8 MICRON, 40/20NM COATING, 47MM, 10/PK
Foxx Life Sciences EZLabpure™ PTFE Hydrophobic Membrane Filters, 0.45µm Pore Size, 142mm Diameter Filtration Membrane Discs, Non Sterile, 25/PK
EZLabpure™ PTFE Hydrophobic Membrane Filters are engineered for superior chemical resistance and reliable filtration in laboratory. Available in hydrophobic & hydrophilic configurations, these PTFE membrane filter discs offer consistent flow rates & effective particle retention. Hydrophobic variants are available in 0.22 um, 0.45 um, and 1.2 um pore sizes, while hydrophilic are offered in 0.22 um and 0.45 um, with diameter options 13 mm, 25 mm, 47 mm, 90 mm and 142 mm. All filters are non-sterile and comply with USP Class VI Standards.
These Filtration Membrane Disc Filters are composed of pure PTFE membrane bonded to a polypropylene support, ensuring broad chemical compatibility (pH 1–14) for filtration of solvents, acids, and aggressive chemicals. Due to their hydrophobic nature, pre-wetting with solvents such as ethanol or methanol is required before filtering aqueous solutions.
Foxx Life Sciences EZLabpure™ PES Hydrophilic Membrane Filters, 0.22µm Pore Size, 13mm Diameter Membrane Filter Discs, Non Sterile, 100/PK
EZLabpure™ PES Hydrophilic Membrane Filters designed for efficient sample clarification, sterile filtration of aqueous solutions, and reliable particle retention in laboratory applications. Featuring high-quality polyethersulfone (PES) membranes, these filter discs provide excellent flow rates, low protein binding, and consistent performance. These PES membrane filter discs are available in 0.22 um and 0.45 um pore sizes, and offered in 13 mm, 25 mm, 47 mm, and 90 mm diameters, all variants are supplied non-sterile for research and analytical use. All components comply with USP Class VI Standards, ensuring safety and material compatibility for laboratory environments.
These filtration membrane discs offer very low protein affinity, high permeability, long operational lifespan due to its high throughput, and minimal extractable levels. Their hydrophilic surface enables efficient performance across a wide range of liquid media and dry gas streams.
Foxx Life Sciences EZLabpure™ Nylon Hydrophilic Membrane Filters, 0.8µm Pore Size, 47mm Diameter Membrane Filter Discs, Non Sterile, 50/PK
EZLabpure™ Nylon Hydrophilic Membrane Filters are engineered for reliable particle retention, sample clarification, and broad chemical compatibility in laboratory applications. These Nylon membrane filter discs provide excellent mechanical strength, consistent flow rates, and dependable performance for aqueous and organic solutions. Available in 0.22 um, 0.45 um, 0.8 um, and 1.2 um pore sizes, and offered in 13 mm, 25 mm, 47 mm, 90 mm, 142 mm, and 293 mm diameters, all variants are supplied non-sterile. All components comply with USP Class VI Standards, ensuring material safety and consistent filtration quality.
The filtration membrane discs are recommended for particle removing filtration for water, aqueous solutions and solvents for analytical determinations such as HPLC, and filtration of these liquids. These filters are hydrophilic and suitable for HPLC sample preparations, sterile filtration of aqueous and solvent solutions, and clarification and particle removal.
Alkali Scientific CellPro™ NY Nylon Membrane Filter, 100/Pk, 13 mm, 0.45 μm
CellPro™ NY (Nylon) Membrane Filters are durable, hydrophilic membranes made from high quality nylon polymer, designed for general purpose filtration of aqueous solutions and many organic solvents. These membranes provide excellent mechanical strength, high flow rates, and broad chemical compatibility, making them suitable for sample preparation, sterilization, microbiology, and analytical applications. Nylon membranes exhibit low extractables and reliable binding characteristics for nucleic acids and proteins, supporting use in biochemical and environmental testing workflows. Because of their hydrophilic structure, they require no pre wetting and allow fast, efficient filtration of both acidic and alkaline solutions. Available in multiple pore s and diameters, these filters are supplied in convenient packs of 100, ready for routine laboratory and research use.
Alkali Scientific CellPro™ NY Nylon Membrane Filter, 100/Pk, 47 mm, 0.45 μm
CellPro™ NY (Nylon) Membrane Filters are durable, hydrophilic membranes made from high quality nylon polymer, designed for general purpose filtration of aqueous solutions and many organic solvents. These membranes provide excellent mechanical strength, high flow rates, and broad chemical compatibility, making them suitable for sample preparation, sterilization, microbiology, and analytical applications. Nylon membranes exhibit low extractables and reliable binding characteristics for nucleic acids and proteins, supporting use in biochemical and environmental testing workflows. Because of their hydrophilic structure, they require no pre wetting and allow fast, efficient filtration of both acidic and alkaline solutions. Available in multiple pore s and diameters, these filters are supplied in convenient packs of 100, ready for routine laboratory and research use.
Alkali Scientific ProCycle™ Pre-cut Sealing Membranes, Sterile, Aluminum membrane, 10 bags of 10 membranes
RNase, DNase, DNA, and PCR inhibitor free Evaporation rates ≤ 5% Inner packs of 10 membranes PureAmp™ Sealing Membranes are compatible with all standard PCR plates. Membrane options include pierceable aluminum, standard transparent, optically clear sticky adhesive, optically clear pressure-sensitive adhesive, and low-adhesive EZ-peel, all of which are guaranteed to keep evaporation rates below 5%.
Foxx Life Sciences EZLabpure™ Nylon Hydrophilic Membrane Filters, 0.45µm Pore Size, 293mm Diameter Filtration Membrane Discs, Non Sterile, 25/PK
EZLabpure™ Nylon Hydrophilic Membrane Filters are engineered for reliable particle retention, sample clarification, and broad chemical compatibility in laboratory applications. These Nylon membrane filter discs provide excellent mechanical strength, consistent flow rates, and dependable performance for aqueous and organic solutions. Available in 0.22 um, 0.45 um, 0.8 um, and 1.2 um pore sizes, and offered in 13 mm, 25 mm, 47 mm, 90 mm, 142 mm, and 293 mm diameters, all variants are supplied non-sterile. All components comply with USP Class VI Standards, ensuring material safety and consistent filtration quality.
The filtration membrane discs are recommended for particle removing filtration for water, aqueous solutions and solvents for analytical determinations such as HPLC, and filtration of these liquids. These filters are hydrophilic and suitable for HPLC sample preparations, sterile filtration of aqueous and solvent solutions, and clarification and particle removal.
Sterlitech Corporation Polyester (PETE) Membrane Filters, Transparent, 3.0 Micron, 12 Micron Thickness, 6E5 pores/cm2, 300 x 3000mm, 1/Pk
Sterlitech solvent resistant, hydrophilic polyester track etch (PETE) membranes are made from a thin, translucent, microporous, polyester film and are ideal for use in blood assays, microscopic analysis, and the general filtration of samples.PETE Membrane Filter Applications:* Precise General Filtration and Prefiltration* Removal of red blood cells from plasma* Flow control of reagents through assay
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.