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
- (11)
- (1)
- (72)
- (9)
- (135)
- (9)
- (9)
- (4)
- (6)
- (162)
- (1)
- (8)
- (1)
- (2)
- (3)
- (22)
- (61)
- (21)
- (87)
- (3)
- (1)
- (1)
- (41)
- (14)
- (91)
- (3)
- (43)
- (5)
- (2)
- (1)
- (1)
- (22)
- (1)
- (1)
- (2)
- (3)
- (4)
- (4)
- (3)
- (11)
- (2)
- (41)
- (119)
- (49)
- (3)
- (20)
- (197)
- (1)
- (47)
- (9)
- (21)
- (8)
- (74)
- (10)
- (21)
- (42)
- (1)
- (15)
- (1)
- (6)
- (1)
- (6)
- (1)
- (11)
- (28)
- (1)
- (1)
- (50)
- (5)
- (1)
- (17)
- (1)
- (433)
- (144)
- (1)
- (1)
- (1)
- (1)
- (1)
- (1)
- (1)
- (1)
- (1)
- (209)
- (1)
- (1)
- (2)
- (8)
- (140)
- (1)
- (1)
- (24)
- (26)
- (33)
- (2)
- (3)
- (1)
- (14)
- (1)
- (2)
- (5)
- (1)
- (3)
- (1)
- (15)
- (2)
- (28)
- (19)
- (1)
- (7)
- (14)
- (8)
- (1)
- (1)
- (1)
- (1)
Filtered Search Results
Thickness (Metric) | 125 μm |
---|---|
Pore Size | 0.45 μm |
Bubble Point | 22 psi |
Flow Rate | >2.6 mL/min x cm2 |
Wettability | Hydrophilic |
Type | Filter Membranes |
Color | White |
Material | PVDF |
Filter Type | Screen Filter |
Hydrophobicity | Hydrophilic |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
MilliporeSigma™ Express™ PLUS Membrane Filters
Plain white polyethersulfone membranes provide ultrafast filtration for a variety of applications
Wettability | Hydrophilic |
---|---|
Type | Filter Membranes |
Color | White |
Material | PES |
Filter Type | Screen Filter |
Hydrophobicity | Hydrophilic |
For Use With (Application) | Provide ultrafast filtration of tissue culture media, additives, buffers and other aqueous solutions. This membrane is also used in many ready-to-use sterile filtration devices. |
Autoclavable | Not Autoclavable |
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 |
MilliporeSigma™ MF-Millipore™ Membrane Filter, 0.45 μm
Mixed cellulose esters (MCE) membrane, hydrophilic
Thickness (Metric) | 150 μm |
---|---|
Pore Size | 0.45 μm |
Flow Rate | 60 mL/min x cm2 |
Wettability | Hydrophilic |
Type | Filter Membranes |
Material | MCE |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
GVS Magna™ Nylon Membrane Filters
Plain white nylon membranes offer low extractables, high uniformity
Material | Nylon |
---|---|
Hydrophobicity | Hydrophilic |
For Use With (Application) | Permit use for aqueous filtration without wetting and organic solvent filtrations such as HPLC |
Autoclavable | Autoclavable |
Material | MCE |
---|---|
For Use With (Application) | For all analytical, ultracleaning, and sterilizing applications at temperatures below 75°C (167°F) – except those involving esters, ether-alcohols, ketones, nitroparaffins or strong acids and bases. |
Autoclavable | Autoclavable |
Pore Size | 0.45 μm |
---|---|
Bubble Point | 35.5 psi |
Flow Rate | 60 mL/min x cm2 |
Wettability | Hydrophilic |
Type | Filter Membranes |
No. per Case | 100Pack |
Quantity | 100/Pk. |
Material | Nylon |
Filter Type | Screen Filter |
Hydrophobicity | Hydrophilic |
For Use With (Application) | Clarifying aqueous or organic solutions prior to HPLC analysis. |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
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 |
---|---|
Material | Cellulose Nitrate |
Autoclavable | Autoclavable |
MilliporeSigma™ 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 | 5 μm |
---|---|
Bubble Point | ≥0.2 bar, air with water |
Flow Rate | >15.4 mL/min x cm2 |
Wettability | Hydrophilic |
Type | Filter Membranes |
No. per Case | 100Pack |
Quantity | 100/Pk. |
Material | PVDF |
Filter Type | Screen Filter |
Hydrophobicity | Hydrophilic |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
MilliporeSigma™ MF-Millipore™ Membrane Filter, 8 μm
Mixed cellulose esters (MCE) membrane, hydrophilic
Pore Size | 8 μm |
---|---|
Flow Rate | 620 mL/min x cm2 |
Wettability | Hydrophilic |
Type | Filter Membranes |
Color | White |
Material | MCE |
Hydrophobicity | Hydrophilic |
For Use With (Application) | For use in air monitoring; Fluid monitoring; Particle collection and analysis; QC of fluid holding tanks. |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
Pore Size | 0.1 μm |
---|---|
Type | Filter Membranes |
Color | White |
Material | PVDF |
Filter Type | Screen Filter |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
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 |
---|---|
Diameter (Metric) | 47 mm |
Material | Nucleopore Polycarbonate |
Hydrophobicity | Hydrophilic |
For Use With (Application) | Epifluorescence microscopy, environmental analysis, cell biology |
Thermo Scientific™ Nalgene™ Membrane and Prefilter Disks
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
Carry out particulate and microbial analysis with these filter membranes. Available in various forms for water quality work, cold sterilization or sample clean up.
MilliporeSigma™ MF-Millipore™ Membrane Filter, 0.45 μm, Gridded
Mixed cellulose esters (MCE) membrane, hydrophilic
Thickness (Metric) | 150 μm |
---|---|
Pore Size | 0.45 μm |
Flow Rate | 60 mL/min x cm2 |
Wettability | Hydrophilic |
Type | Filter Membranes |
No. per Case | 100Pack |
Quantity | 100/Pk. |
Material | MCE |
Hydrophobicity | Hydrophilic |
Autoclavable | Not Autoclavable |
Sterility | Non-sterile |
Membrane Type | Gridded |
Gas Flow Rate | 4 L/min/ cm2 |