HOME > Laboratory Filter Paper > General Purpose, Qualitative-technical Filters > General Purpose, qualitative-technical Filters General Purpose, qualitative-technical Filters Grade 3 hw - medium rate of filtration, increased wet strength, plain This paper grade is generally used for analytical and technical purposes., as Clarification, Analytical Sample Preparation, Particle Analysis Basis Weight 65 g/m2 Filtration velocity: 10 ml / 35 seconds Typical Pore Size: 5 - 10 µm Similar to: Whatmann Student Grade, S&S 595, 3002 M-N 615 Diam. Code Grade/Description Pack of 55 mm FTR 3.303.055 3 hw / Filter discs. 100 70 mm FTR 3.303.070 3 hw / Filter discs. 100 90 mm FTR 3.303.090 3 hw / Filter discs. 100 110 mm FTR 3.303.110 3 hw / Filter discs. 100 125 mm FTR 3.303.125 3 hw / Filter discs. 100 150 mm FTR 3.303.150 3 hw / Filter discs. 100 185 mm FTR 3.303.185 3 hw / Filter discs. 100 240 mm FTR 3.303.240 3 hw / Filter discs. 100 Catalogue Download BOECO Catalogue our entire assortment Laboratory Filter Paper General Purpose, Qualitative-technical Filters