Hardened Quantitative Filter Paper - 0550-0425 - Grade 55, 4.25cm 4.70cm coal and coke

coal and coke

as described in EPA Method 1311

Grade 74 is also used as a high purity filter for speedy filtering of trace elements such as silver chromate

Grade 75 is often used for filtering trace elements

Element mg/L Ag 0

Hardened Quantitative Filter Paper - 0550-0425 - Grade 55, 4.25cm 4.70cm coal and cokeAhlstrom Munksj 55 15 m, Fast Speed This is a fast filtering grade 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.