---
kind: "section"
citation: "7 C.F.R. § 58.810"
title: "7"
number: "58.810"
heading: "Temperature requirements."
url: "https://uscodex.org/cfr/7/58.810"
---

# §58.810. Temperature requirements.

- (a) Unless processed within 2 hours, all whey or condensed whey, except acid type whey with a titratable acidity of 0.40 percent or above, or a pH of 4.6 or below, shall be cooled to 45 °F or less, or heated to 145 °F or higher. Other temperatures may be used when essential for the technology of the process, such as lactose crystallization and membrane whey separation processes, when the quality and wholesomeness of the product is not impaired.
- (b) Recording thermometers shall be required and so located to assure that the cooling or heating requirements in [paragraph (a)](#a) of this section are met.

## Notes

### Source

Source: 40 FR 47911, Oct. 10, 1975, unless otherwise noted. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981.

### Authority

Authority: 7 U.S.C. 1621-1627.

### Source

Source: 23 FR 9410, Dec. 5, 1958, unless otherwise noted. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981.