[Code of Federal Regulations] [Title 9, Volume 2] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 9CFR317.21] [Page 182-183] TITLE 9--ANIMALS AND ANIMAL PRODUCTS CHAPTER III--FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE PART 317_LABELING, MARKING DEVICES, AND CONTAINERS--Table of Contents Subpart A_General Sec. 317.21 Scales: testing of. (a) The operator of each official establishment that weighs meat food [[Page 183]] products shall cause such scales to be tested for accuracy, in accordance with the technical requirements of NIST Handbook 44, at least once during the calendar year. In cases where the scales are found not to maintain accuracy between tests, more frequent tests may be required and monitored by an authorized USDA program official. (b) The operator of each official establishment shall display on or near each scale a valid certification of the scale's accuracy from a State or local government's weights and measures authority or from a State registered or licensed scale repair firm or person, or shall have alternative documented procedures showing that the scale has been tested for accuracy in accordance with the requirements of NIST Handbook 44. [55 FR 49834, Nov. 30, 1990, as amended at 62 FR 45024, Aug. 25, 1997; 65 FR 34389, May 30, 2000; 66 FR 52486, Oct. 16, 2001]