Feature●Ash less: 0.007 percent ash maximum●Fine (2.5 µm) nominal particle retention rating, eliminates large particles that might otherwise interfere with sensitive instrumentation●Herzberg filtration speed of 1870 s●Commonly used as a calcium carbonate filterDescription
Ges whatman grade 42 quantitative papers have the finest retention of all whatman ash less filter paper grades. Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.