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Whatman Grade 1 quantitative filter paper circles (25mm diameter) offer 11 micron retention and a 10.5 s/100mL/sq inch flow rate, making them the go-to choice for reliable filtration in food, agriculture, air pollution monitoring, and educational labs. Packaged in convenient sets of 100, these cellulose filters deliver consistent, medium retention performance for a wide range of routine analytical separations.
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