A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels.

Grade GF/C: 1.2 μm

Whatman filter paper Grade GF/C glass filters offer a good flow rate and loading capacity that support total suspended solids analysis with a fine nominal particle retention of ...

Grade GF/B: 1.0 μm

Grade GF/B is a thick filter with fine particle filter and good loading capacity. GF/B filters are particularly useful for liquid clarification and liquid scintillation counting...

Grade GF/A: 1.6 μm

Grade GF/A glass microfiber filters feature fine retention. GF/A filters are suitable for water quality parameter measurement and air filtration applications.

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Slightly more retentive than Grade 1 with a corresponding increase in filtration time (i.e., slightly slower filtration speed).

A widely used standard grade filter paper for routine applications with medium retention and flow rate.