APPLICATIONS science : Routine clean-up of insoluble liquids such as biological fluids or organic extracts in labs 9 cm Lab Filter Paper, Standard Qualitative Grade 2 | Ubuy Nepal metalurgy : Determination of silicon impurities in pig iron and steel WINE MAKING - Filtration of musts environment : Fast flowing air and exhausts monitoring when the collection of fine particles is not critical. For even faster filtration, use ST004-185v fluted filter papers. COARSE RETENTIONRetains coarse particles and gelatinous precipitates like: Metal hydroxides (Al, Cr, Fe, Mg) , Be Oxide Insoluble iron and ore, precipitated Silicates EQUIVALENCE & SIZESee the cross-reference table and size diagrams in the photos to choose the appropriate reference and diameter of your circles. wine : Filtration of musts Whatman Grade 4 Equivalent 18.5 Cm Lab , Standard Qualitative Grade 2 - ZENPORE Filter Paper Culture media, and colloidal sedimentsSPECS paper : pure cotton cellulose, flow : fast, retention : 20~25 micron Thanks to our close relationship with filter paper manufacturers, we can now offer a limited range of those products directly to consumers. Meanwhile, provides full range size of the qualitative filter papers and supplied in sheets, discs, roll, as well as folded formats Suitable for gravity filtration in standard funnels, not vacuum. ZENPORE 12.5 cm Slow Flow Lab Filter Paper - 100 Discs in Nepal at NPR 4726, Rating SIMILAR GRADE 4 - Equivalent to Whatman standard grade 4, qualitative lab filter paper