7 CFR § 58.415 - Starter vats.

Bulk starter vats shall be of stainless steel or equally corrosion resistant metal and should be constructed according to the applicable 3–A Sanitary Standards. New or replacement vats shall be constructed according to the applicable 3–A Sanitary Standards. The vats shall be in good repair, equipped with tight fitting lids and have adequate temperature controls such as valves, indicating and/or recording thermometers.