Sieve number
Microns (µ)
Wt. of sieve (A)
Final weight (B)
% retained (B-A)
Cumulative % weight retained
20
200
368.2
393.4
25.2
30
212
362.3
372.6
20.3
45.5
40
150
361.3
382.6
21.4
66.9
60
125
355.2
375.6
20.4
87.3
80
90
350.6
357.8
6.6
93.9
100
75
355.6
5.6
99.5
