7 CFR § 58.529 Grading and Inspection, General Specifications for Approved Plants and Standards for Grades of Dairy Products§ 58.529 Chemical requirements.Current through Jul 29, 2026 · Read all of Part 58(a) Moisture. See § 58.505(b). (b) Milkfat. See § 58.505(b). (c) pH. Not higher than 5.2. (d) Phosphatase. Not more than 4 micrograms of phenol equivalent per gram of cheese.