Sartorius FT-4-104-150, 150 mm Blue Dot Quantitative Folded Filter Papers / Grade 391, 100/Pk.

These 150 mm diameter very slow filtering, blue dot folded filter papers are used for quantitative and gravimetric analyses as well as for pressure or vacuum filtration. They are made out of 100 % cotton linters with an α-cellulose content of > 98% and are acid-washed to make the papers ashless and achieve high purity.