Section 712(3) in Rules under the United Provinces Excise Act, 1910
(3)The details of the Permanganate Test as given in the United States Pharmacopoea, which the rectified spirit should satisfy, are as follows :"Place 20 c.c. of Alcohol in a glass stopped cylinder that has been thorougly cleaned with hydrochloric acid, then rinse with distilled water and finally with the alcohol to be tested. Cool the contents to approximately 15° C; and add, by means of a carefully cleaned pipette, 0.1 c.c. of tenth normal potassium permanganate (3.16 gm. per litre), noting the exact time of addition. Mix at once by inverting the stoppered cylinder, and allow it to stand at 15° C, for five minutes. The pink colour must not entirely disappear.
