7 Pa. Code § 59a.335
Special equipment, such as flakers, pulverizers or hammer mills, used to further process dry milk products must be of sanitary construction and parts must be accessible for cleaning and inspection. Instantizing systems must comply with the current 3-A Accepted Practices for Instantizing Systems.
This section cited in 7 Pa. Code § 59a.326 (relating to equipment and utensils).