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
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Filtered Search Results
Cytiva Whatman™ Type WCN Cellulose Nitrate Membranes
Recommended for majority of routine applications, this membrane is manufactured under strictly controlled conditions. Whatman™ Type WCN Cellulose Nitrate Membranes narrow pore size distribution for improved surface capture and analysis.
Color | White |
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Material | Cellulose Nitrate |
Autoclavable | Autoclavable |
Cytiva Whatman™ Polyester Drain Discs
Provides a flat surface to eliminate filter tearing or rupturing. Whatman™ Polyester Drain Discs are used to support membrane filters. They are available in a variety of diameters for use in a range of devices.
Thickness (Metric) | 100 μm |
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Material | Polyester |
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.
Material | Nylon |
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Hydrophobicity | Hydrophilic |
Autoclavable | Autoclavable |
Cytiva Whatman™ 47 mm Nuclepore™ Polycarbonate Track-Etched Membranes
Manufactured from high-quality polycarbonate film and track-etched for high pore size precision. Whatman™ 47mm Nuclepore™ Polycarbonate Hydrophilic Membranes combine high flow rates and chemical and thermal resistance with sharply defined pores, making them suitable for microscopy, cytology, parasitology, and certain air and oceanography analyses.
Flow Rate | High |
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Diameter (Metric) | 47 mm |
Material | Nucleopore Polycarbonate |
Hydrophobicity | Hydrophilic |
For Use With (Application) | Epifluorescence microscopy, environmental analysis, cell biology |
Cytiva Whatman™ Mixed Cellulose Ester Membrane Filters
Whatman™ Mixed Cellulose Ester Membrane Filters are biologically inert and offers high degree of internal surface area for greater product adsorption.
Material | MCE |
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Autoclavable | Autoclavable |
Sterility | Sterile |
Cytiva Nucleus Membrane
Made from polycarbonate film, for precision analysis of track-etched manufacturing
Type | Nucleus Membrane |
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Material | Polycarbonate |
For Use With (Application) | Air Analysis, Bioassay, Cell Biology, Environmental Analysis, Epi-Fluorescence Microscopy, EPA Test, Fuel Test, Parasitology, and Underwater Microbiology |
Cytiva Whatman™ Anodisc™ Filter Membranes
Constructed with precision pore structure and narrow pore size distribution. Whatman™ Anodisc™ Filter Membranes ensure a high level of particle removal efficiency. Captures microorganisms and particulates on the surface of the membrane for subsequent analysis.
Material | Aluminum Oxide |
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Cytiva Whatman™ 0.8 μm Pore Size (ME 27) Mixed Cellulose Ester Membranes, White/Black Grid
Whatman™ (ME 27) Mixed Cellulose Ester Membranes, White/Black Grid are particularly effective in applications requiring higher flow rates and larger volume filtration. Supplied with clearly defined grid lines at regularly spaced intervals to assist in microbiological colony counting.
Pore Size | 0.8 μm |
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Diameter (English) | 1.85 in. |
Material (Membrane) | ME 27 |
Color | White |
Grid Color | Black |
Quantity | 100 Pk. |
Material | MCE |
Diameter (Metric) Membrane | 47 mm |
For Use With (Application) | Filtration, cytology, air monitoring, aqueous HPLC samples, biological assays |
Sterility | Sterile |
Thickness (Metric) | 140 μm |
Bubble Point | 1.3 bar |
Flow Rate | 2.8 sec./100 mL/12.5 cm ² (at Δp = 0.9 bar) |
Diameter (Metric) | 47 mm |
Thickness (English) | 0.006 in. |
Autoclavable | Autoclavable |
Size (Metric) Grid | 3.1 mm |
Gas Flow Rate | 11.6 sec./100 mL (at Δp = 3 mbar) |
Cytiva Whatman™ Regenerated Cellulose Membranes: Grade RC 60
Consists of pure cellulose without any wetting agents
Thickness (Metric) | 70 μm |
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Pore Size | 1.0 μm |
Material | Regenerated Cellulose |
Hydrophobicity | Hydrophilic |
Cytiva Whatman™ Regenerated Cellulose Membranes: Grade RC 58
Consists of pure cellulose without any wetting agents
Thickness (Metric) | 75 μm |
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Pore Size | 0.2 μm |
Material | Regenerated Cellulose |
Hydrophobicity | Hydrophilic |
Cytiva Whatman™ ME 24 Plain Mixed Cellulose Ester Membranes
Enables the uptake of growth media to the bacterial colonies without chemically inhibiting their growth. Whatman™ ME 24 Plain Mixed Cellulose Ester Membranes are composed of cellulose acetate and cellulose nitrate, which provides a more uniform surface.
Thickness (Metric) | 135 μm |
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Includes | Interleaving paper |
Pore Size | 0.2 μm |
Bubble Point | 3.7bar |
Flow Rate | 20s/100mL/12.5cm2 |
Grid Color | Plain |
Material | MCE |
Autoclavable | Autoclavable |
Membrane Type | ME24 |
Cytiva Whatman™ 0.6 μm Pore Size (ME 26) Mixed Cellulose Ester Membranes, Plain
Whatman™ (ME 26) Mixed Cellulose Ester Membranes are particularly effective in applications requiring higher flow rates and larger volume filtration, including clarification or sterilization of aqueous solutions, particulate analysis and removal, air monitoring, and microbial analysis.
Pore Size | 0.6 μm |
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Disposable | Single-use |
Bubble Point | 3.7 bar |
Flow Rate | 4.8 sec./100 mL/12.5cm² (at Δp = 0.9 bar) |
Material (Membrane) | ME 26 |
Grid Color | Plain |
Material | MCE |
Filter Type | Plain |
For Use With (Application) | Filtration, cytology, air monitoring, aqueous HPLC samples, biological assays |
Autoclavable | Autoclavable |
Sterility | Non-sterile |
Gas Flow Rate | 21 sec./100 mL (at Δp = 3 mbar) |
Cytiva Whatman™ Cyclopore™ Polycarbonate Membrane Filters
Ensures visibility of particles under the microscope with smooth membranes and low affinity for stains. Whatman™ Cyclopore™ Polycarbonate Membrane Filters can also reproduce microfiltration characteristics of track-etched membrane filters.
Material | Polycarbonate |
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No. per Pack | 100Pack |
Hydrophobicity | Hydrophilic |