POWDERS OF VEGETABLE AND ANIMAL ORIGIN DRUGS ARE OFFICIALLY DEFINED AS FOLLOWS:

1 Very Coarse (No. 8) 2 Coarse (No. 20) 3 Moderately Coarse (No. 40) 4 Fine (No. 60) 5 Very Fine (No. 80) Pneumonics: VC, C ,M, F, VF BISISI EM EF BI EF