Crêped Filter Papers for Qualitative & Technical Analyses
Crêped filter papers are mostly used for the rapid filtration of relatively coarse precipitates; because of their crêped structure they provide a larger filtration area than smooth filter papers. Grades with a wet burst resistance > 30 kPa are referred to as wet-strengthened and are therefore suitable for pressure or vacuum filtration.
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Crêped Filter Papers for Qualitative & Technical Analyses
Grade Weight Thickness(mm) Filtration Time (s) Wet Bursting Strength (kPa) Air Resistance (mbar) Properties 5 H/N 85 0.28 3 ≥ 40 n.a. Very fast filtration, wide-pore 34/N 60 0.20 4 ≥ 50 2.0 Very fast filtration 37/N 135 0.50 4 ≥ 70 1.9 Very fast filtration, wide-pore 1602/N 70 0.23 5 ≥ 30 n.a. Very fast filtration 39/N, 180 g 180 0.65 5 ≥ 90 2.5 Very fast filtration, wide-pore 39/N, 300 g 300 0.95 5 ≥ 120 2.5 Very fast filtration, wide-pore 603/N 75 0.25 8 ≥ 50 n.a. Fast filtration 6 S/N 145 0.55 12 ≥ 90 n.a. Medium-fast filtration 601/N 65 0.19 13 ≥ 30 n.a. Medium-fast filtration, 67/N, 160 g 160 0.65 13 ≥ 60 5.5. Medium-fast filtration
(g/m2)
for sugar industry