Laboratory Filter Paper

filter papers produced by Hawach

laboratory filter paper manufacturer

are divided into two series, qualitative filter paper, and quantitative filter paper. Qualitative filter papers are divided into standard grades and wet strengthened grades. Wet strengthened grades are added a small amount of chemical stabilizer on the basis of the standard grades. Quantitative filter paper is generally aimed at ashless filter paper. It must undergo special treatment procedures during use. To a certain extent, it can effectively resist certain chemical reactions, so impurities generated on its surface will be much less, under normal circumstances it is generally used in quantitative analysis.

Qualitative filter paper ash content is less than 0.1%, and quantitative filter paper ash content is less than 0.007%. Ash content is the biggest difference between qualitative filter paper chemistry lab and quantitative filter paper.

As a

filter paper manufacturers

, Hawach has disc and sheet type, regular or customized size, and shape are all available.