Quantitative Filter Paper

filter paper  It Is a paper with good filter performance, loose , has a strong absorption performance for the liquid . Analysis of laboratory  commonly used filter paper as a filter medium, made the solid separate from the solution.our filter paper have 3 type.  high speed filter paper : filter speed ≤ 35 Second mid speed filter paper : filter speed ≤ 70 S Second slow speed filter paper : filter speed ≤ 140 S Second size:round paper diameter cm   7  9  11 12.5  15 18 23 27        squarecm*cm  30*30  60*60 90*90 Qualitative gm2 80.0+-5.0 Separating property (PbSO4) The filtrate is transparent, no precipitation Fracture length (km) 1.9 Min Resistant break-wet (mm spout ) 140 Min Ash (900℃) 0.15%Max PH 6-8 Speckiness (pcm2) (>=0.2-0.3)mm2 One grade (>0.3-0.7)mm2 >0.7 mm2 One grade Moisture 7.0+-3.0%.