Quantitative filter paper, hardened Ashless Series

Grade 541: 22 μm (fast filter paper)

HARDENED ASHLESS FILTER PAPER- SERIES 22µm No 541R Filtration Speed Fast, Retention - Coarse And Gelatinous Precipitates, Extra hardened with very high wet strength

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Grade 542 2.7 μm (slow filter paper)

High retention of fine particles under demanding conditions. Slow flow rate. Very hard and strong with excellent chemical resistance. Often used in gravimetric metal determinations.

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