membrane filter

membrane filter
membrane filter n a filter esp. of cellulose acetate that has pores of any of various maximum diameters so as to prevent the passage of microorganisms (as viruses or bacteria) of greater than a particular size

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a filter made of a thin film of nylon, cellulose acetate, or other material, available in a range of defined pore sizes, usually in the range of 0.1–5 μm.

Medical dictionary. 2011.

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