Content Handbook F

Outline of method

A suspension of known concentration in standard water or distilled water is prepared, placed in a prescribed measuring cylinder at a constant temperature, and allowed to remain undisturbed for a specified time. The top 9/10ths are removed and the content of active ingredient in the top 9/10ths is determined.

Scope

The method is suitable for suspensions containing up to 1 % active ingredient but is not necessarily suitable for suspensions of higher concentration.