Membrane filters

White. They are recommended for the filtration of aqueous solutions and proteins. Due to their low content of extractable substances, they are suitable for sample preparation in environmental analysis.

• High flow rates
• Low non-specific protein adsorption
• High resistance

White, individually sterile packed. Resistant to steam sterilisation up to 134 °C, or in dry heat up to 180 °C. Very low adsorption (important when filtering proteinaceous solutions). Suitable for particle removal and ultracleaning of aqueous solutions, methanol, ethanol, high-grade alcohols and residue analysis of fuels and oils. The extractable content of these filters make up < 1 % of their weight. Other pore sizes and formats available on request.

White, individually sterile packed. Very low content of extractable materials. Weight constant after 60 minutes of drying at 105 °C. Suitable for residue analysis, microscopic viewing in incident or transmitted light, chemotaxis, x-ray fluorescence, spectrometry and gravimetric analysis. Autoclavable at 121 °C. Other pore sizes and formats are available on request.

Cellulose nitrate (cellulose ester) membrane filters, white with black grid, 3 or 6 mm hydrophobic edge, for colony count and sterility testing, individually, sterile packaged / non-sterile.

Cellulose acetate membrane filters, white with black grid, 3 mm hydrophobic edge, for colony count and sterility testing, individually, sterile packaged.

MF-Millipore™ membrane have a biologically inert mixture of cellulose acetate and cellulose nitrate. The MF-Millipore™ filters without Triton® surfactant have a lower water extractable content compared to the standard MF-Millipore™ filters and contain a minimal amount of wetting agent.

Features & Benefits:

• Manifold filter for biological and environmental monitoring applications
• available in various pore sizes
• white or black coloured
• Freely selectable whether with or without grid surface
• Compatible with ethylene oxide, gamma irradiation and autoclave sterilization methods

Recommended for clarification and sterilisation of aqueous solutions, microbiological analysis and particle counts

• Qualified for aqueous solutions (pH 4-8), hydrocarbons and some dilute solvents
• High non-specific adsorption: 160 µg/cm² for gamma-Globulin
• Maximum temperature 130 °C

Recommended for filtration, sterilisation and clarifications of mobile phase in HPLC processes with aqueous, alkaline and organic samples

• Made entirely of polyamide, hydrophilic
• High non-specific adsorption, high mechanical stability
• Qualified for many solvents and alkaline solutions, pH range 3-14
• Maximum temperature 134 °C

MF-Millipore™ Membranes have a biologically inert mixture of cellulose acetate and cellulose nitrate. The MF-Millipore™ filters without Triton® surfactant have a lower water extractable content compared to the standard MF-Millipore™ filters and contain a minimal amount of wetting agent.

Features & Benefits:

• Manifold filter for biological and environmental monitoring applications
• available in various pore sizes
• white or black coloured
• Freely selectable whether with or without grid surface
• Compatible with ethylene oxide, gamma irradiation and autoclave sterilization methods

For emission control.

• Hydrophilic
• Air / Gas Filtration
• Non-sterile

Rapid methods for the detection of mycoplasma contamination are essential for improving monitoring of the production process of biologicals. With the use of the Microsart^® Mycoplasma the testing time can be reduced from weeks to just 3 hours.

The Millex® Syringe Filter has been specially manufactured for sterilization or clarification of biological solutions. To increase throughput and flow rate, the filter has a larger filtration surface. This also reduces the pressure required to emtpy the syringe. The filters are provided with a quality certification because they are manufactured under a controlled environment and an automated process.

The Millex® Syringe Filter has been specially manufactured for sterilization or clarification of biological solutions. To increase throughput and flow rate, the filter has a larger filtration surface. This also reduces the pressure required to emtpy the syringe. The filters are provided with a quality certification because they are manufactured under a controlled environment and an automated process.

The Millex® Syringe Filter has been specially manufactured for sterilization or clarification of biological solutions. To increase throughput and flow rate, the filter has a larger filtration surface. This also reduces the pressure required to emtpy the syringe. The filters are provided with a quality certification because they are manufactured under a controlled environment and an automated process.

The Millex® Syringe Filter has been specially manufactured for sterilization or clarification of biological solutions. To increase throughput and flow rate, the filter has a larger filtration surface. This also reduces the pressure required to emtpy the syringe. The filters are provided with a quality certification because they are manufactured under a controlled environment and an automated process.

The stacked-disk format of Millipak® filter units eliminates the risk of fiber release from downstream support material.

Features & Benefits:

• No risk of membrane cracking as the 0.22 µm membrane is supported by a rigid plastic disc with channels
• As the membranes are welded onto the support disc, the risk of contamination is considerably reduced
• Minimum dead volume thanks to the large filter surface

Organic solvents, blowing agents, concentrated acids and bases as well as cyrogenic liquids do not affect the Mitex™ membrane. The membrane is easy to handle. Although it is not supported, it still offers a high level of comfort.

Features & Advantages:

• Biologically and chemically inert
• Wide chemical compatibility
• Hydrophobic
• temperature resistant in the range of +260 °C and below -100 °C

• Track-etched for highly defined pore size and high pore density
• Treated with PVP to render it hydrophilic
• Low extractables, minimizing sample contamination risk
• High chemical resistance and good thermal stability for a wide range of sample types
• Low, consistent ash and low tare weights
• Smooth flat surface for high particle visibility

Sterile, dehydrated culture media pads in petri dishes. Once they are moistened with 3.0 ml to 3.5 ml of sterile and demineralised (or distilled) water they are ready-to-use immediately. All Nutrient Pad sets are supplied with the appropriate membrane filters, which are also individually sterile packed. Shelf life of the NPS 18 to 24 months at room temperature. Alternative nutrient media are available on request.

The nylon-membrane filters are compatible with a wide range of solvents. Its apllication includes particel removal and clarification, solvent filtration and particel analysis.

Features & Benefits

• Autoclavable with filter for sterile filtration
• Hydrophilic

Sartolab^® P20: for sterile filtration of cell culture media. Ready-to-use, disposable filtration units. Surfactant-free, 0.2µm cellulose acetate membrane (SFCA) with minimal protein adsorption. With Luer lock inlet and filling bell on the outlet.
Sartolab^® P20 plus: with additional, binding agent-free, glass-fibre (GF) pre-filter for media which are difficult to filter.

Filter membranes with grid lines for easy colony counting. For microbiological analysis of water, food and beverage application in the pH range 4-8.

• Sterile
• Maximum thermal stability 130 °C

Housing PP. Watertrap between filter flask and vacuum pump to prevent wetting of the devices.

Without any filtrate transfer, you can filter into a 50 ml centrifuge tube with the Steriflip® filter unit. Simply screw the filter unit onto your centrifuge tube, tilt it 180 degrees and apply vacuum. The second tube, which is attached to the filter unit, now contains your sterile filtrate.

Steripak™-GP filter units have been developed for pressure filtration of larger quantities of tissue culture media with or without serum. The filter units are each equipped with the Millipore Express membrane with low protein binding and fast flow rate. To prevent air blockage, each filter is equipped with a filling bell for the bottle top and a manually operated inlet vent. As this product is disposable, the filter units are not autoclavable.

Features & Advantages:

• 0.22 µm Millipore Express membrane
• For operation with a pump or pressure vessel
• Sterile and ready for use