Typical Properties - Ashless Quantitative Papers Grade Description Particleretentionin liquid (?m) Filtration speedherzberg (s) Ash content* (%) Typicalthickness(?m) Basis weight(g/m2) 40 Medium flow 8 340 0.007 210 95 41 Fast 20 54 0.007 220 85 42 Slow 2.5 1870 0.007 200 100 43 Medium to fast 16 155 0.007 220 95 44 Slow to medium 3 995 0.007 180 80 589/1 Fast 12-25! 25 0.01 190 80 589/2 Medium fast 4-12! 70 0.01 180 85 589/3 Slow < 2! 375 0.01 160 84 * Ash is determined by ignition of the cellulose filter at 900
Quantitative Filter Papers - Ashless Grades (Ash 0.007%) |