Farmakognosi

Diket:
W1 = 1,0086 g
W0 = 46,4420 g - 1,0086 g = 45,4334 g
W2 = 46,3575
Ditanya = kadar air (%) simplisia

Dijawab =
% kadar air= W1 - (W2-W0) / W1 × 100%
% kadar air = 1,0086 g - (46,3575 g - 45,4334 g) / 1,0086 g × 100%
% kadar air = 1,0086 g - 0,9241 g / 1,0086 g × 100%
% kadar air = 0,0845 / 1,0086 × 100%
=0,08377 g x 100%
= 0,084 g x 100%
= 8,4% (kadar air dari simplisia tersebut)