Qualitative grade filter paper circles
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A. VWR Brand Grade
Porosity: Coarse
Flow Rate: Fast
Particle Retention: 25μm
Applications: For coarse precipitates. Ideal for
Al(OH)3, CoCO3, Hgl2, Mg(OH)2, etc.
B. Whatman Grade #1
Porosity: Medium
Flow Rate: Medium
Particle Retention: 11μm
Applications: General pupose paper. Ideal for gas
filtration, air pollution analysis & soil analysis
C. VWR Brand Grade #410
Porosity: Fine
Flow Rate: Slow
Particle Retention: 1μm
Applications: For analytical operations involving
filtration of CuCO2, PbSO4, BaSO4, MnCO3, etc.