Ahlstrom Grade 75 Quantitative Filter Paper, Hardened Ashless
Ahlstrom Grade 75 Medium Flow Rate Ashless/Hardened Filter Paper. Grade 75, 2.0 µm - Medium Speed. This grade has medium flow rate and good particle retention and is most commonly used for applications requiring high chemical resistance to strong acid and alkali. Grade 75 is often used for filtering trace elements, collecting hydroxides after precipitation by strong alkalis and in the analysis of metals in acid and alkali solutions.