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
RJM SALES INC MEMBRANES METHANOL YSI 4/PK
5083391 MEMBRANES METHANOL YSI 4/PK
Alkali Scientific CellPro™ MCE (Mixed Cellulose Ester) Membrane Filter, 100/Pk, 90 mm, 0.45 μm
CellPro™ MCE (Mixed Cellulose Ester) Membrane Filters are high performance filtration membranes commonly used in laboratory and industrial applications for microbiological analysis, particle monitoring, and air/water testing. These filters are composed of a blend of cellulose acetate and cellulose nitrate, combining the strengths of both materials for reliable and consistent performance. Key Features: High Porosity (up to 80–85%): Ensures fast flow rates and high throughput. Uniform Pore Structure: Provides accurate and consistent retention of microorganisms and particles. Hydrophilic Nature: Eliminates the need for pre wetting with surfactants; ideal for aqueous solutions. Low Extractables: Minimizes contamination risks in sensitive analyses. Smooth, White Surface (or Gridded Options): Makes it easy to visually inspect and count colonies during microbiological testing.
Foxx Life Sciences EZLabpure™ Nylon Hydrophilic Membrane Filters, 1.2µm 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.
Foxx Life Sciences EZLabpure™ CA Hydrophilic Membrane Filters, 0.45µm, 47mm Diameter Membrane Filter Discs, Non Sterile, 50/PK
EZLabpure™ Cellulose Acetate CA Hydrophilic Membrane Filters are designed for efficient particle retention, sample clarification, and routine laboratory filtration of aqueous solutions. Manufactured with high-quality CA membranes, these membrane filter discs provide low protein binding, excellent flow rates, and reliable performance for analytical and research applications. Available in 0.2 um, 0.45 um, and 0.8 um pore sizes, and offered in 25 mm, 47 mm, and 90 mm diameters. All components comply with USP Class VI Standards, ensuring material safety and consistent filtration quality.
These Filtration Membrane Disc Filters combine high flow rates with very low absorption characteristics. These filters are suitable for sterile filtration of culture media, microbe-retentive and particle-removing filtration of nutrient media, water and solutions, and cell harvesting
Grainger Membrane Filter 47 mm 0.45 um PK100
The LabExact Membrane Filter is a 47mm diameter hydrophilic polyethersulfone membrane filter with a 0.45μm pore size. It has low protein binding and is ideal for analytical sample preparation including HPLC. The polyethersulfone membrane is naturally hydrophilic and has low extractables. It has a high flow rate and loading capacity. This makes it useful for filtering aqueous and organic solvents. The 47mm diameter allows it to fit standard filter holders. It is sterile and individually packaged. This filter is an excellent choice for analytical sample preparation and clarification.