Is the micron rating on a filter bag or cartridge truly the maximum size particle that can pass through its media?
Solution filter micron ratings have been misinterpreted for years. The micron rating assigned to a particular bag or cartridge filter is based on the contaminated solution passing through the filtration media a certain number of times. It is not guaranteed to remove particles matching the rating size in a single pass. For this reason it is often necessary, when trying to reach certain micron levels, that a pair of filters be installed in series.
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