Continued on next page 730 Membrane Filters webcode WW6PB011 1 2 Membrane Filters, Hahnemühle 1Cellulose acetate membrane filters Ideal for aqueous samples, biological applications and protein filtration • Resistant to aqueous solutions with a pH value of 4 – 8, to most alcohols, hydrocarbons and oils • Filtration of aqueous solutions for biological and clinical analyses • Sterilisation of biological solutions (CA membranes with a pore size of 0.2 µm are spe - cifically recommended if the extraction of proteins is of particular importance) • Sterilisation of culture media (0.2 µm) • Maximum temperature 180°C Ø mm PU pc/Pack Pore size µm 0.2 0.45 Order No. Order No. 25 100 10 15 91025 10 15 92025 47 100 10 15 91047 10 15 92047 50 100 10 15 92050 Other sizes on request. Cellulose nitrate membrane filters Ideal for clarification and sterilisation of aqueous solutions, for microbiological analyses and particle count determination • High non-specific adsorption: 160 µg/cm² for gamma-globulin • Resistant to aqueous solutions with a pH value of 4 – 8, to hydrocarbons and some diluted solvents • Maximum temperature: 130°C • Membranes with grid lines are suitable for microbiological analyses (determination of the bacteria count) of water, drugs, drinks, cosmetics, etc. for evidence of E.coli, coliform bacteria, and other microbes. • Sterilised membranes are packaged individually Pore size µm Ø mm Version Order No. PU pc/Pack 0.2 25 non sterile, white 10 15 93035 100 0.2 47 non sterile, white 10 15 93036 100 0.2 50 non sterile, white 10 15 93039 100 0.45 25 non sterile, white, gridded 10 15 93041 100 0.45 47 non sterile, white, gridded 10 15 93042 100 0.45 47 non sterile, white 10 15 93043 100 0.45 50 non sterile, white 10 15 93050 100 0.8 47 non sterile, white 10 15 93051 100 0.2 47 sterile, white, gridded 10 15 93046 100 0.45 47 sterile, white, gridded 10 15 93047 100 0.45 47 sterile, white 10 15 93048 100 0.45 47 sterile, black, gridded 10 15 93049 100 0.45 50 sterile, black, gridded 10 15 93059 100 Other sizes on request. 2Mixed cellulose ester membrane filter Ideal for clarification and sterilisation of aqueous solutions, for microbiological analyses and particle count determination • Well suited for gravimetric analyses, constant weight • Suitable for aqueous solutions (pH value 4 – 8), hydrocarbons and some diluted solvents • High non-specific adsorption, 160 µg/cm² for gamma-globulin (with 0.2 µm pore size, reduction with increasing pore size) • Temperature resistance up to 180°C • Membranes with grid lines are suitable for microbiological analyses (determination of the bacteria count) of water, drugs, drinks, cosmetics, etc. for evidence of E.coli, coliform bacteria, and other microbes; sections with 3.1 x 3.1 mm grid • Sterilised membranes are packaged individually Pore size µm Ø mm Version Order No. PU pc/Pack 0.2 50 white, non-sterile 10 15 94030 100 0.45 25 white, non-sterile 10 15 94031 100 0.45 47 white, non-sterile 10 15 94932 100 0.45 47 white, non-sterile, gridded 10 15 94933 100 0.45 50 white, non-sterile, gridded 10 15 94941 100 0.45 50 black, non-sterile, gridded 10 15 94934 100 3 47 white, non-sterile 10 15 94935 100 5 47 white, non-sterile 10 15 94936 100 8 47 white, non-sterile 10 15 94937 100 0.2 47 white, sterile, gridded 10 15 94938 100 Separating Systems Filtration
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