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Filter Efficiency Test Allows Full NIST Traceability

Using fine silica glass beads of 1.5, 2, 3, 4.5, 5 and 6 µm diameter, the new test enables measurement down to very fine pore sizes. To perform the test, standards are made into a dilute aqueous suspension which is drawn through the filter medium using a simple vacuum system. Efficiency is measured by determining the percentage of standard retained in the filter.




Whitehouse Scientific
Whitchurch Road, Waverton
Chester, Ch, CH3 7PB




 
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