Rev. Rul. 60-46

The use of cation exchange resin "Permutit Q Spec 157" in a continuous column process, for the treatment of wines, is considered as being consistent with good commercial practice within the provisions of section 240.524 of the Federal Wine Regulations. The cation exchange resin must be essentially in the sodium state so that certain of the metallic elements in the wine will be replaced with sodium ions. After regeneration and before reuse the resin must again be in the sodium state. The over-all change in the pH of wine before and after treatment with the cation exchange resin shall not be greater than 0.2 pH units. Winemakers desiring to use cation exchange resin "Permutit Q Spec 157" in the treatment of wine may receive the approval of the Assistant Regional Commissioner, Alcohol and Tobacco Tax, by filing of appropriate notice pursuant to section 240.530 of the regulations.

This ruling amplifies Revenue Ruling 58-461, C.B. 1958-2, 999, which contains a list of materials authorized for use in the production, cellar treatment, and finishing of wine. Revenue Ruling 58-461, supra, has previously been amplified by the following:

Revenue Ruling 58-595, C.B. 1958-2, 1003;