Quantitative Filter Paper, Hardened Ashless

Ahlstrom Munksjö Grade 55 Hardened Ashless Quantitative Filter Paper, 15.0um Retention. Grade 55 is fast filtering for gravimetric analysis of coarse particles and gelatinous precipitates (i.e.: aluminum and zirconium hydroxides) in acid and alkali solutions. Grade 55 is also used in air and foodstuffs analysis and for chloride and phosphorous in cement, coal, and coke. Ash...

Cytiva-Whatman Grade 541 Quantitative Filter Papers, Hardened Ashless are acid hardened cellulose filter paper features high wet-strength, high chemical resistance and a large 22 µm nominal particle retention for fast analytical filtration. Maximum of 0.006% ash concentration. 100 circles/box.