990 Filtration Filter papers Grade Applications Filtration speed Retention range (µm) Weight (g/m2) Thickness (mm) Filtration speed (DIN 53137) 11 For coarse and voluminous precipitates such as iron, aluminium, chromium hydroxide, si determination in steel and cast iron analysis Fast 12 - 15 84 0.18 10 12 For coarse precipitates such as lead, iron, silver sulphides, arsenic, cadmium, food Medium to fast 8 - 12 84 0.17 20 13 Fine precipitates such as magnesium, ammonium, phosphates Medium 5 - 8 84 0.16 50 14 Fine precipitates such as lead dioxide, calcium fluoride, nickel sulphide, zinc sulphide Slow 3 - 5 84 0.15 100 15 Difficult filtration conditions such as cold barium sulphates, metastannic acid, cuprous oxide Very slow 2 - 3 84 0.14 180 hMade from 100% cotton fibre hWashed with acid and cleaned with demineralised water hAsh content 0.007% Grade 11 Grade 12 Grade 13 Grade 14 Grade 15 Ø (mm) Units/ box Cat. No. €/ box Cat. No. €/ box Cat. No. €/ box Cat. No. €/ box Cat. No. €/ box 55 100 1441055B N/A - 1443055B N/A - 1440055B N/A - 1444055B N/A - 1442055B N/A - 70 100 1441070B N/A - 1443070B N/A - 1440070B N/A - 1444070B N/A - 1442070B N/A - 90 100 1441090B N/A - 1443090B N/A - 1440090B N/A - 1444090B N/A - 1442090B N/A - 110 100 1441110B N/A - 1443110B N/A - 1440110B N/A - 1444110B N/A - 1442110B N/A - 125 100 1441125B N/A - 1443125B N/A - 1440125B N/A - 1444125B N/A - 1442125B N/A - 150 100 1441150B N/A - 1443150B N/A - 1440150B N/A - 1444150B N/A - 1442150B N/A - 185 100 1441185B N/A - 1443185B N/A - 1440185B N/A - 1444185B N/A - 1442185B N/A - 210 100 - - - - 1440241B N/A - - - - - 240 100 1441240B N/A - 1443240B N/A - 1440240B N/A - 1444240B N/A - 1442240B N/A - Quantitative filter papers h100% cellulose fibres hMechanical resistance hFood compatibility Grade Aspect Retention range (µm) Weight (g/m2) Thickness (mm) Filtration speed (DIN 53137) 1101 Creped 38 - 75 160 0.55 26 1103 Smooth 12 - 16 150 0.30 65 Grade 1101 (folded) Grade 1103 Ø (mm) Units/ box Cat. No. €/ box Cat. No. €/ box 70 100 - - 1003070B N/A - 90 100 - - 1003090D* N/A - 110 100 - - 1003110B N/A - 125 100 - - 1003125B N/A - 150 100 - - 1003150B N/A - 185 100 - - 1003185B N/A - 240 100 1213240B N/A - - - 320 100 1213320B N/A - - - Technical filter papers * 50 per box, price for 50
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