[Code of Federal Regulations] [Title 9, Volume 2] [Revised as of January 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 9CFR590.150] [Page 679] TITLE 9--ANIMALS AND ANIMAL PRODUCTS CHAPTER III--FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE PART 590_INSPECTION OF EGGS AND EGG PRODUCTS (EGG PRODUCTS INSPECTION ACT)--Table of Contents Sec. 590.150 Official plant numbers. An official plant number shall be assigned to each plant granted inspection service. Such plant number shall be used to identify all containers of inspected products prepared in the plant which are capable of use as human food. A plant shall not have more than one plant number.