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Filter Paper 18.5 cm Lab Qualitative Filter Paper for Chemistry, Standard Grades 1, 2, 4 - ZENPORE Fast, Medium, Slow Flow 185 mm (Bundle of 3 x 100 Discs) 18.5 cm (Bundle of 3) June2023_cocoonwix soccer socks for adult andFilter Paper 18. 5 cm Lab Qualitative Filter Paper for Chemistry, Standard Grades 1, 2, 4 ZENPORE Fast, Medium, Slow Flow 185 mm (Bundle of 3 x 100 Discs) GRADE 1, 2, 4 STANDARD Qualitative Filter Paper Equivalent to Whatman grade 1, 2, 4, these laboratory filter paper are used for a broad range of filtration when you need to separate a solid or precipitate from the filtrate. Made from high alpha cellulose cotton, these standard lab filter are not