Qualitative Filter Paper
High Quality and Consistent Filtration Performance
These two grades of filter paper come in a variety of diameters and deliver the purity and consistent performance of more sophisticated analytical grades.
Specifications: For medium retention and flow rate,
Grade 1 (11µm) filters cover a wide range of laboratory applications--clarification of liquids, soil analysis, seed testing procedures and air pollution monitoring.
Grade 4 (20-25µm) filters offer extremely fast filtration with excellent retention of coarse particles and gelatinous precipitates-ferric hydroxide and aluminum hydroxide. Useful as a rapid filter for routine cleanup of biological fluids or organic extracts during analysis. Boxes of 100.
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