987 Filtration All prices are indicative and exclude VAT. Visit www.dulis.nl Dimensions (mm) Units/ box €/ box Cat. No. Grade 40 €/ box Cat. No. Grade 41 €/ box Cat. No. Grade 42 €/ box Cat. No. Grade 43 €/ box Cat. No. Grade 44 ø 30 100 1440329 N/A - - - - - - - - - ø 42.5 100 1440042 N/A - 1441042 N/A - 1442042 N/A - - - - - ø 47 100 1440047 N/A - 1441047 N/A - 1442047 N/A - - - - - ø 55 100 1440055 N/A - 1441055 N/A - 1442055 N/A - - - - - ø 70 100 1440070 N/A - 1441070 N/A - 1442070 N/A - - - 1444070 N/A - ø 90 100 1440090 N/A - 1441090 N/A - 1442090 N/A - 1443090 N/A - 1444090 N/A - ø 110 100 1440110 N/A - 1441110 N/A - 1442110 N/A - 1443110 N/A - 1444110 N/A - ø 125 100 1440125 N/A - 1441125 N/A - 1442125 N/A - 1443125 N/A - 1444125 N/A - ø 150 100 1440150 N/A - 1441150 N/A - 1442150 N/A - 1443150 N/A - 1444150 N/A - ø 185 100 1440185 N/A - 1441185 N/A - 1442185 N/A - 1443185 N/A - 1444185 N/A - ø 240 100 1440240 N/A - 1441240 N/A - 1442240 N/A - - - - - ø 320 100 - - 1441320 N/A - 1442320 N/A - - - - - 8"x 10" 100 - - 1441866 N/A - - - - - - - 460 x 570 100 1440917 N/A - 1441917 N/A - - - - - - - €/ box Cat. No. Dimensions (mm) Units/ box Grade 50 €/ box Cat. No. Grade 52 €/ box Cat. No. Grade 54 €/ box Cat. No. Grade 540 Reinforced without ash Reinforced low ash €/ box Cat. No. Grade 541 €/ box Cat. No. Grade 542 ø 24 100 - - - - - - 1540324 N/A - - - - - ø 42.5 100 1450042 N/A - - - - - 1540042 N/A - 1541042 N/A - - - ø 47 100 - - - - - - - - 1541047 N/A - - - ø 55 100 1450055 N/A - - - 1454055 N/A - 1540055 N/A - 1541055 N/A - 1542055 N/A - ø 70 100 1450070 N/A - - - 1454070 N/A - - - 1541070 N/A - 1542070 N/A - ø 90 100 1450090 N/A - 1452090 N/A - 1454090 N/A - 1540090 N/A - 1541090 N/A - 1542090 N/A - ø 110 100 1450110 N/A - 1452110 N/A - 1454110 N/A - 1540110 N/A - 1541110 N/A - 1542110 N/A - ø 125 100 1450125 N/A - 1452125 N/A - 1454125 N/A - 1540125 N/A - 1541125 N/A - 1542125 N/A - ø 150 100 1450150 N/A - 1452150 N/A - 1454150 N/A - 1540150 N/A - 1541150 N/A - 1542150 N/A - ø 185 100 1450185 N/A - - - 1454185 N/A - 1540185 N/A - 1541185 N/A - 1542185 N/A - ø 240 100 1450240 N/A - 1452240 N/A - 1454240 N/A - 1540240 N/A - 1541240 N/A - 1542240 N/A - ø 320 100 1450320 N/A - - - 1454320 N/A - - - 1541320 N/A - - - 500 100 - - - - 1454500 N/A - - - - - - - Surface cleaning 100 1450993 N/A - - - - - - - - - - - 460 x 570 100 - - - - 1454917 N/A - - - 1541917 N/A - - - Quantitative, reinforced low-ash and ash-free h Standard quality, ashless hProduced from high quality cotton fibres in dust controlled rooms hHigh purity filter for a wide range of critical applications h0.007% ash maximum h High quality, low ash content hStrong acid treatment for better chemical resistance and after wetting resistance hSmooth and resistant surface for precipitate recovery h0.015% ash maximum h High quality, ashless hAcid treatment for better resistance after wetting in combination with a very low ash residue hSmooth and resistant surface for a wide variety of manipulations h0.006% ash maximum Quantitative, ashless Weight (g/m2) Retention (µm) Filtration speed Thickness (µm) Grade (flat) Quantitative ashless filters (rate ‹ 0.007 %) 40 Medium 8 210 95 41 Fast 20-25 220 85 42 Slow 2.5 200 100 43 Medium to Fast 16 220 95 44 Slow to medium 3 180 80 Hardened quantitative filters with low ash content (rate ‹ 0.015 %) 50 Slow 2.7 115 97 52 Medium 7 175 101 54 Very fast 20-25 185 92 Quantitative hardened ashless filters (rate ‹ 0.006 %) 540 Medium 8 160 88 541 Fast 20-25 155 82 542 Slow 2.7 150 93 Whatman™Filter Papers Whatman™ Quantitative filter papers
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