это мы с Ольгой память освежаем
http://www.pharmacopeia.cn/v29240/usp29nf24s0_c905.html
USP< 905> UNIFORMITY OF DOSAGE UNITS
The uniformity of dosage units can be demonstrated by either of two methods, weight variation or content uniformity...
Hard Capsules— Weigh accurately 10 capsules individually, taking care to preserve the identity of each capsule. Remove the contents of each capsule by a suitable means.
Weigh accurately the emptied shells individually, and calculate for each capsule the net weight of its contents by subtracting the weight of the shell from the respective gross wei
From the results of the Assay, obtained as directed in the individual monograph, calculate the content of active ingredient in each of the capsules, assuming homogeneous
distribution of the active ingredient.