P-29, r. 1 - Regulation respecting food

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11.7.5. During the pasteurization process, the temperature of every particle of the dairy product must not fall below the temperatures in Schedule 11.B; during ultra-high temperature treatment, the temperature must not fall below the temperatures in Schedule 11.B.
Every particle of an unfermented or unconcentrated fluid dairy product including cheese whey must be cooled to the storage temperature required by section 1.4.1 immediately after pasteurization, or immediately after ultra-high temperature treatment if the dairy product or cheese whey is not aseptically packaged in sterilized hermetically sealed containers.
For low-temperature slow pasteurization, the dairy product or cheese whey must be cooled within one hour.
O.C. 741-2008, s. 15.