Code: F11372835
A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels.
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Used for high precipitate capacity and increased wet strength. Whatman™ Qualitative Grade Plain Circles and Sheets - Grade 3 provide double the thickness of Whatman Grade 1.
Suitable for suction filtration
Highly absorbent
Particle retention: >6μm
Porosity: Medium fine
Filtration speed†: ASTM™, 90 sec.; Herzberg, 325 sec.
Surface: Smooth, grained