-
- General laboratory consumables
- Occupational safety, Security
- Analytical measurement and testing
- Stirring, Shaking, Mixing
- Sample preparation
- Distillation, separation, filtration
- Heating and cooling technology
- Liquid Handling
- Vacuum technology, Drying, Dry storage
- Optical instruments and microscopes
- Cleaning and sterilisation
- Environmental-, soil-, water-, food analysis
- Chromatography
- Cleanroom
Membrane filters
Membrane filters, mixed cellulose ester, with grid
![A click opens this product segment](/lab/shop/pic/150x150/owweb/s4414_2.jpg)
Recommended for clarification and sterilisation of aqueous solutions, microbiological analysis and particle counts
- Membranes with grid lines are ideal for microbiological analysis (bacterial counts) of water, pharmaceuticals, beverages, cosmetics, etc. for the measurement of coliform bacteria and other germs
- Gridded membranes (black grid on white membrane) for counts of colonies as a standard method of quantification, black grid, clearly defined sections (3.1 x 3.1 mm grid)
- Special ink, non-toxic and totally free from bacterial growth inhibitors, is used for imprinting
- Sterilised membranes (packaged in individual blisters)
Membrane Filter, mixed cellulose ester
![A click opens this product segment](/lab/shop/pic/150x150/owweb/s4413_2.jpg)
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 and pore size 0.2 µm (decreases with increasing pore size)
- High mechanical stability, ideal for gravimetrical measurements
- Maximum temperature 180 °C
Membrane Filters, cellulose acetate, non sterile
![A click opens this product segment](/lab/shop/pic/150x150/owweb/s2880_1.jpg)
Recommended for aqueous samples, biological applications and protein filtration.
- Compatible to aqueous solutions with pH 4-8, most alcohols, hydrocarbons and oils
- Filtration of aqueous solutions for biological and clinical analysis
- Sterilisation of biological solutions (CA-membranes with a pore size of 0.2 µm are specially recommended when the recovery of proteins is critical)
- High thermal stability: 180 °C
- Very low nonspecific adsorption
Membrane Filter, hydrophobic, PTFE
![A click opens this product segment](/lab/shop/pic/150x150/owweb/s4096_2.jpg)
Made entirely of PTFE (polytetrafluorethylene), reinforced by Polypropylene net.
- Permanently hydrophobic
- Allowing passage of air even at low differential pressure
- Resistant to almost all chemicals, very strong acids, cryoliquids, alkalis, aggressive organic solvents
- Must be pre-wetted with an organic solvent, such as ethanol, methanol or isopropanol, before filtration of aqueous samples
- Max. Temperature 145 °C
Membrane Filters, Cellulose Nitrate, non-sterile
![A click opens this product segment](/lab/shop/pic/150x150/owweb/s3613_2.jpg)
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
MF-Millipore™ membrane, mixed cellulose ester, 142 mm
![A click opens this product segment](/lab/shop/pic/150x150/owweb/6050805_1.jpg)
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:...
MF-Millipore™ membrane, mixed cellulose ester, 90 mm
![A click opens this product segment](/lab/shop/pic/150x150/owweb/6050805_1.jpg)
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:...
Membrane filter PES, hydrophil
![A click opens this product segment](/lab/shop/pic/150x150/owweb/s6134_1.jpg)
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