Grade 42 Ashless Filter Paper for Instrumental Analysis, 90 mm circle (100 pcs) 1442-090

Grade 42 Ashless Filter Paper for Instrumental Analysis, 90 mm circle (100 pcs)

Whatman ashless Grade 42 quantitative filter papers are suitable for a wide range of critical analytical filtration procedures for quantitative analysis.

Grade 42 filter papers have the finest retention of all Whatman ashless filter paper grades.

Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.

-  Ashless: 0.007% 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 filter

-  Particularly suitable for gravimetric analysis