Section 73(a) in The Punjab Distillery Rules, 1932
(a)The preparation of bub shall be conducted in a special bub vat or vat set apart only for such preparation; and the registration of the materials used and of solution and other connected with it, shall be carried out in the register in Form 10. The bub vats used may be smaller than the [ordinary fermenting vats, if desired and these may] [Substituted vide Notification No. G.S.R. 28/P.A. 1/14/Ss. 21 and 59/95, dated 15.1.1995.] be connected with it by an auxiliary vessel for dissolving the material used for setting up the bub, but fermentation must not be allowed to produce to close in this vessel. Ordinarily the whole of the bub must be conveyed into the fermentation vat or vats to which it is to be added within 24 hours of first beginning to make, or dissolve or set it up.
