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
Fisherbrand™ Polyethersulfone Membranes
Fisherbrand™ Polyethersulfone Membranes features highly asymmetrical pore structure that offers effective loading capacity and high flow rate.
Wettability | Yes |
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Type | Plain Disc |
Color | White |
Quantity | 100 Pack |
Material | PES |
Hydrophobicity | Hydrophilic |
For Use With (Application) | Filtration of special chemical reagent, high temperature liquids, filtration of special chemical reagent, high temperature liquids, filtration of drugs |
Sterility | Non-sterile |
Fisherbrand™ Mixed Celluloses Esters Membranes Non-sterile Filter
Fisherbrand™ Mixed Celluloses Esters Membranes Non-sterile Filters are composed of cellulose acetate and cellulose nitrate.
Wettability | Yes |
---|---|
Type | Plain Disc |
Color | White |
Quantity | 100 Pack |
Material | MCE |
Hydrophobicity | Hydrophilic |
For Use With (Application) | Microdialysis of DNA and Proteins, clarification of aqueous solutions during microbiological analysis, identification of Nucleic Acids |
Sterility | Non-sterile |
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 |
---|---|
Hydrophobicity | Hydrophilic |
Autoclavable | Autoclavable |
Cytiva Whatman™ ME 25 Plain Mixed Cellulose Ester Membranes
Facilitates the counting process and minimizes eye fatigue with color contrast between the surface and the colonies. Whatman™ ME 25 Plain Mixed Cellulose Ester Membranes are characterized by a smooth and more uniform surface.
Thickness (Metric) | 145 μm |
---|---|
Includes | Interleaving paper |
Pore Size | 0.45 μm |
Bubble Point | 2.8bar |
Flow Rate | 12.5s/100mL/12.5cm2 |
Material | Cellulose Acetate, Cellulose Nitrate |
Autoclavable | Autoclavable |
Membrane Type | ME25 |
Merck Isopore™ Membrane Filters, 0.4 μm
Use for analyses of airborne contaminants and other particles using optical or electron microscopy. Isopore™ Polycarbonate Membrane Filters have a smooth, glass-like surface for clearer sample observation. Available in a variety of pore sizes/flow rates, diameters and colors.
Type | Filter Membranes |
---|---|
Material | Polycarbonate |
Filter Type | Screen Filter |
Pore Size | 10 μm |
---|---|
Wettability | Hydrophobic |
Type | Filter Membranes |
Color | White |
Material | PTFE |
Filter Type | Screen Filter |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
Membrane Type | Plain |
Merck Fluoropore™ Membrane Filters, 3 μm
Hydrophobic membrane with laminated backing for easier handling
Pore Size | 3.0 μm |
---|---|
Flow Rate | 286 mL/min x cm2 |
Wettability | Hydrophobic |
Type | Filter Membranes |
Color | White |
Material | PTFE |
Filter Type | Screen Filter |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
Cytiva Whatman™ 90 mm Nuclepore™ Polycarbonate Track-Etched Membranes
Manufactured from high-quality polycarbonate film and track-etched for high pore size precision. Whatman™ 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 |
---|---|
Diameter (Metric) | 90 mm |
Material | Nucleopore Polycarbonate |
Hydrophobicity | Hydrophilic |
For Use With (Application) | Epifluorescence microscopy, environmental analysis, cell biology |
Sartorius Polyethersulfone Membrane Filters
Polyethersulfone (PES) filters have a high internal porosity.
Thickness (Metric) | 150 μm |
---|---|
Quantity | 100/Pk. |
Material | PES |
For Use With (Application) | Recommended for filtering biological and pharmaceutical solutions. |
Sartorius Stedim Biotech™ Polyethersulfone (PES) Membrane Filters for e.motion Dispenser, Gridded
Filters for colony counting, particle testing and microscopy.
Material | Nylon |
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ROBU VitraPOR™ Filter Disc, Surfaces Plane, Ground Cylindrical, 40 mm
The faces of the VitraPOR™ biplane filter discs from series 16 are precisely ground down to tight tolerances and plane surfaces.
Thickness (Metric) | 3.5 ± 0.2 mm |
---|---|
Material | Borosilicate Glass (3.3) |
No. per Pack | 10/Pk. |
Diameter (Metric) Membrane | 40 mm |
Sterility | Non-sterile |
ROBU VitraPOR™ Filter Disc, Surfaces Plane, Ground Cylindrical, 25 mm
The faces of the VitraPOR™ biplane filter discs from series 16 are precisely ground down to tight tolerances and plane surfaces.
Thickness (Metric) | 2.5 ± 0.2 mm |
---|---|
Material | Borosilicate Glass (3.3) |
No. per Pack | 10/Pk. |
Diameter (Metric) Membrane | 25 mm |
Sterility | Non-sterile |
ROBU VitraPOR™ Filter Disc, Untreated, Ground Cylindrical, 50 mm
The faces of the VitraPOR™ standard filter discs are press moulded and may show thickness deviations.
Thickness (Metric) | 4.5 ± 1.0 mm |
---|---|
Material | Borosilicate Glass (3.3) |
No. per Pack | 10/Pk. |
Diameter (Metric) Membrane | 50 mm |
Sterility | Non-sterile |
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 |
---|---|
Material | Polyester |