§ 19.376 - Determining obscuration.

Proprietors may determine the proof obsecuration as prescribed in 27 CFR § 30.32 of spirits to be bottled on the basis of a representative sample taken: (a) from a storage tank incident to the transfer of the spirits to the processing account, or (b) from a tank after the spirits have been dumped for processing, whether or not combined with other alcoholic ingredients. The obscuration shall be determined after the sample has been reduced to within one degree of the proof at which the spirits will be bottled. Only water may be added to a lot of spirits to be bottled for which the determination of proof obscuration is made from a sample under this section. The proof obscuration for products gauged pursuant to this section shall be frequently verified by testing samples taken from bottling tanks prior to commencement of bottling.