GR94 Filter Paper Circles. 11cm diameter circles. Quantitative, Ashless Filter Paper. Slow filt. speed & abs. Weight 95g/m2, Thickness 0.18mm, Herzberg 1724 sec/100ml, Rapidity 4ml/min, Wet Strength 40cm, Capillary Rise 13mm, Retention 2um, 100% Cotton Fiber. 40 Packs/CS