FILTER PAPER FOR USE IN WINE LABORATORIES For ordering information please refer to the enclosed grade index. Grade Basis Weight Filtration Vel. Properties g/m2 s/10 ml 41b 75 22 medium fast filtration, plain 6 80 18 thicker and faster filtration, higher wetstrength as grade 41 b, plain 53 70 18 embossed,wetstreng-thened,medium fast 11/N 80 10 plain, fast 292 87 45 plain, medium tight, medium filtration 12/N 80 20 plain 289 80 20 plain, medium wide pores, medium fast 470 140 80 plain, Kieselguhr paper, slow, thick Grade Basis Weight Filtration Vel. Properties g/m2 s/10 ml 293 80 300 slow filtration, particularly fine pores and tight, high-efficiency retention of finest particles 3hw 65 20 medium fast filtration, high wetstrength, plain 37/N 135 4 soft, particularly wide pores, fast filtration, creped 39/N 180 4 soft, particularly wide pores, filtration velocity as in 37/N but extra thickness, creped 470 140 80 Kieselguhr paper, slow filtration, thick MGA 52 105 micro-glass fibre, binder-free, high flow rates with excellent clarification properties
