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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Fisherbrand™ Polyethersulfone Membranes

Fisherbrand™ Polyethersulfone Membranes features highly asymmetrical pore structure that offers effective loading capacity and high flow rate.

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Pricing and Availability
Specifications

Wettability	Yes
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 Cellulose Ester Membranes Sterile Filter

Fisherbrand™ Mixed Celluloses Esters Membranes Sterile Filters are composed of cellulose acetate and cellulose nitrate.

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Pricing and Availability
Specifications

Wettability	Yes
Type	Gridded Disc
Diameter (Metric)	47 mm
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	Sterile

Sartorius Gridded Sterile Cellulose Nitrate Membrane Filters: 0.65μm

Membrane Filters for Colony Counting, Particle Testing and Microscopy - Cellulose nitrate (cellulose ester), gridded, individually, sterile packaged

Pricing and Availability
Specifications

Pore Size	0.7 μm
Material	Cellulose Nitrate
Hydrophobicity	Hydrophilic
For Use With (Application)	For colony count; sterility testing; particle count; microscopy
Sterility	Sterile

Merck MF-Millipore™ Membrane Filter, 0.65 μm

MF-Millipore™ Membrane Filter composed of mixed cellulose esters (MCE) membrane, hydrophilic.

Pricing and Availability
Specifications

Pore Size	0.65 μm
Disposable	Reusable
Flow Rate	140 mL/min. x cm²
Wettability	Hydrophilic
Type	Filter Membranes
Format	Disc
Material (Membrane)	Cellulose
Color	White
Material	MCE
Filter Type	Membrane Filter
Hydrophobicity	Hydrophilic
Autoclavable	Not Autoclavable
Sterility	Non-sterile

Sartorius Polycarbonate Track Etch Membrane Filters

Manufactured from high grade polycarbonate film using track-etch technology.

Pricing and Availability
Specifications

Thickness (Metric)	23 to 27 μm
Quantity	100/Pk.
Material	Polycarbonate Track-Etched (PCTE)
For Use With (Application)	Particulate analysis; epifluorescence miroscopy; fluid clarification; cytology; cell biology; bioassays; water microbiology; environmental analysis.
Autoclavable	Autoclavable

Sartorius™ 13005Z Series Sterile Gridded Cellulose Acetate Membrane Filters

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Sartorius™ 11306 Series Non-Sterile Cellulose Nitrate (CN) Membrane Filters

11306 Series Non-Sterile Cellulose Nitrate (CN) Membrane Filters are hydrophilic, have high flow rates thanks to their symmetrical structure, and are compatible with aqueous solutions (pH 4 – 8), hydrocarbons, and several other organic solvents.

Pricing and Availability
Specifications

Pore Size	0.45 μm
Disposable	Single-use
Material (Membrane)	Cellulose Nitrate
Color	White
Quantity	100 Pk.
Material	Cellulose Nitrate
For Use With (Application)	For many general laboratory applications where a membrane with a high non-specific adsorption is suitable
Sterility	Non-sterile
Thickness (Metric)	130 μm
Bubble Point	2.4 bar
Flow Rate	70 mL/min./cm²/bar
Type	Membrane Filter
Format	Disc
Thickness (English)	5 mil
Filter Type	Membrane Filter
No. per Pack	100 Pk.
Autoclavable	Autoclavable

Sartorius Polyamide (Nylon) Membrane Filters

Recommended for particle-removing filtration of water, aqueous solutions and solvents for analytical determination. Sartorius Polyamide (Nylon) Membrane Filters are white, non-sterile filters without grids. Choose from two pore sizes in four diameters. Bulk packed for space and cost savings.

Pricing and Availability
Specifications

Thickness (Metric)	115 μm
Color	White
Material	Polyamide (Nylon)
Hydrophobicity	Hydrophilic
For Use With (Application)	Recommended for particle removing filtration of water; aqueous solutions and solvents for analytical determination.
Autoclavable	Autoclavable

Merck MF-Millipore™ Membrane Filter, 0.45 μm

MF-Millipore™ Membrane Filter are mixed cellulose esters (MCE) membrane, hydrophilic.

Pricing and Availability
Specifications

Thickness (Metric)	150 μm
Pore Size	0.45 μm
Disposable	Reusable
Flow Rate	60 mL/min. x cm²
Wettability	Hydrophilic
Type	Filter Membranes
Material (Membrane)	Cellulose
Material	MCE
Filter Type	Membrane Filter
Autoclavable	Not Autoclavable
Sterility	Non-sterile

Fisherbrand™ PTFE Filter Membranes

Fisherbrand™ PTFE membrane is hydrophobic filter made of polytetra-fluorethylene laminated with PP layer.

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Pricing and Availability
Specifications

Thickness (Metric)	0.16 mm
Wettability	Yes
Type	Plain Disc
Color	White
Quantity	100 Pack
Material	PTFE
Hydrophobicity	Hydrophobic
For Use With (Application)	Sterilizing filtration of gas samples, clarification and filtration of pure solvents, aerosol samplings, filtration of strong Acids and chemical aggressive solutions, venting applications (hospital air conditioning, tank fermentation in microelectronic)

Fisherbrand™ Cellulose Membranes

Suitable for Clarification and sterilizing filtration of biological fluids . Fisherbrand™ Cellulose Membranes filters are composed of pure cellulose acetate modified to offer researchers the lowest binding filters available.

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Pricing and Availability
Specifications

Wettability	Yes
Type	Plain Disc
Color	White
Quantity	100 Pack
Material	Cellulose Acetate
Filter Type	Microfilter
Hydrophobicity	Hydrophilic
For Use With (Application)	Sterilizing filtration of aqueous solutions (Nutrient media, Buffers and sera), sterilizing filtration of Proteins and enzyme, receptor binding studies
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.

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Pricing and Availability
Specifications

Material	Nylon
Hydrophobicity	Hydrophilic
Autoclavable	Autoclavable

Sartorius Stedim Biotech™ Nitrocellulose Membrane for Blotting

Sartorius Stedim Biotech™ Nitrocellulose Membrane for Blotting combines the advantages of high protein binding capacity with low background and high membrane stability.