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main / offer for laboratory / filtration materials /quantitative filter papers Filtrak     Filter papers of Filtrak company for quantitative analyses - commonly called ashless, are manufactured using pure cellulose and cotton down. Content of alpha-cellulose is approx. 95%.      Due to a very low content of ash (after burning - below 0.01%) they are used for routine quantitative analyses in each laboratory.     They are offered in two groups: first group of products designated with numbers: 388, 389, 390, 391, 392, 393 includes filter papers of standard mechanical strength. second group of products designated with numbers: 1388, 1389, 1390, 1391, 1392 includes reinforced filter papers, presenting mechanical strength also when wet. They fit excellently for Buechner's funnels and pressure filtration. TYPE Colour BASIS WEIGHT [g/cm2] FILTRATION TIME [s]* PROPERTIES 388 80 10 QUICK FILTRATION 389 80 20 MODERATELY QUICK FILTRATION 389F 80 20 MODERATELY QUICK FILTRATION LOW CONTENT OF FAT 390 80 100 SLOW FILTRATION 391 80 180 VERY SLOW FILTRATION 392 80 50 MODERATE TO SLOW FILTRATION 393 100 250 LOWEST SPEED OF FILTRATION 1388 80 10 QUICK FILTRATION STRENGTH WHEN WET 1389 80 20 MODERATELY QUICK FILTRATION STRENGTH WHEN WET 1390 80 100 SLOW FILTRATION STRENGTH WHEN WET 1391 80 180 VERY SLOW FILTRATION STRENGTH WHEN WET 1392 80 50 MODERATE TO SLOW FILTRATION STRENGTH WHEN WET * Filtration time of 10 ml of water sample     Filter papers of the first and second groups are available in packages of 100 pieces in the form of: sheets, round filter papers, fluted filter papers. Size [cm] OD 5,5 OD 7,0 OD 9,0 OD 11,0 OD 12,5 OD 15,0 OD 18,5 OD 24,0 58x58 Filter papers - - - - - - - - + Round filter papers + + + + + + + + - Fluted filter papers - - + + + + + + -     Other formats and diameters on request.     Most of popular filter papers we have on stock in continuous sale.     Sales: Local Distributors or Sales Department of POCH S.A., tel. +48 32 23-92-378.     Technical support: Export Department, mail: export@poch.com.pl
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