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(Qualitative Filter Papers NO.42(2.5)) |
Quantitative Filter Papers - Ashless Grades (Ash 0.007%) Grade 42: 2.5 A world standard for critical gravimetric analysis with the finest particle retention of all Whatman cellulose filter papers. Typical analytical precipitates include barium sulphate, metastannic acid and finely precipitated calcium carbonate. | |
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