HOME > Laboratory Filter Paper > Boeco Qualitative Filters > Qualitative Filters - grade 292a Qualitative Filters - grade 292a Grade 292a - slowly filtering, narrow pores filtration of fine precipitates such as lead dioxide calcium fluoride nickel sulphide zinc sulphide Basis Weight 87 g/m2 Filtration velocity: 10 ml / 60 seconds Typical Pore Size: 5 - 8 µm Similar to: Whatmann 2, S&S 2095 Diam. Code Grade/Description Pack of 55 mm FTR 3.215.055 292a / Filter discs. 100 70 mm FTR 3.215.070 292a / Filter discs. 100 90 mm FTR 3.215.090 292a / Filter discs. 100 110 mm FTR 3.215.110 292a / Filter discs. 100 125 mm FTR 3.215.125 292a / Filter discs. 100 150 mm FTR 3.215.150 292a / Filter discs. 100 185 mm FTR 3.215.185 292a / Filter discs. 100 240 mm FTR 3.215.240 292a / Filter discs. 100 Catalogue Download BOECO Catalogue our entire assortment Laboratory Filter Paper Boeco Qualitative Filters