Description
Features of the Whatman Quantitative Filter Papers:
Suitable for gravity or low-suction filtration.
Acid washed: Ash content not exceeding 0.007%.
Meet ASTM “ash content per circle” requirements.
Manufactured with demineralized water for high purity.
Limited wet strength, use care to avoid rupturing.
Particle Retention: >20—25µm.
Porosity: Coarse.
Filtration Speed: ASTM, 12 seconds; Herzberg, 54 seconds.
Surface: Smooth, open texture.
Applications: Gelatinous precipitates and coarse particles. Metallurgy: iron and aluminum hydroxides. Air pollution monitoring. Normal loading; limited wet strength.
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