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Nominal filtration ratingAn arbitrary micrometer value indicated by a filter manufacturer. Due to lack of reproducibility this rating is deprecated.
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Nominal filtration ratingfilter rating indicating the approximate particle size for which the majority will not pass through a given filter. It is generally interpreted as meaning that 85% of the particles of size equal to the nominal filter rating will be retained by the filter. Due to unreproducibility and lack of precision with respect to true upstream vs. downstream co [..]
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