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Use of quantitative filter paper

The difference between quantitative and qualitative filter paper filter paper is mainly after ashing produce ash: qualitative filter paper is less than 0.13%, quantitative filter paper is less than equal to 0.0009%.

It is a kind of quantitative filter paper, and its ash content is less than 0.1mg, and the weight is negligible on the analytical balance.

Note that the two concepts of quantitative filter paper and qualitative filter paper are cellulose filter paper, which is not applicable to other types of filter paper, such as glass fiber filter paper.