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Cytiva's Whatman™ Grade 989 White Ribbon Quantitative Filter Paper, Ashless
Cytiva's Whatman™ Grade 989 "White Ribbon" quantitative filter paper has a roughed surface and is an ideal ashless filter paper for quantitative analysis, gravimetric analysis, chromatography, and electrophoretic work. This quantitative filter paper retains medium precipitates such as calcium carbonate and hot barium sulfate. Flow Rate: Medium, Porosity: Medium, Pore Size: 8-12um particle retention.