La. Admin. Code tit. 7 § XXXI-117

Current through Register Vol. 50, No. 11, November 20, 2024

Section XXXI-117 - Calibration

A. Glassware. All glassware used in the determination of fat content for milk, cream and finished or processed milk products shall conform to the United States Bureau of Standards specifications and shall meet the approval of the commissioner. All glassware calibrated for measurement purposes shall bear a Sealed mark which shall constitute the manufacturers' bond that the glassware meets all specifications set forth by the United States Bureau of Standards.

B. Milko-Tester Mark III. This device, and any other such device, shall be calibrated to conform to the Babcock Method of analysis and shall be determined on the basis of not less that 20 samples tested by the Babcock Method and the Milko-Tester Mark III. For calibration purposes, each determination shall be computed to the hundredths percent. When two or more individual tests vary in excess of 0.15 percent, the calibration shall not be deemed acceptable. The variation between simple averages of all tests performed shall not exceed 0.03 percent. The commissioner may, at his discretion, reduce the 20 test calibration procedure to twice each week utilizing in its stead, Grade A Homogenized finished product control samples as a basis of calibration. After each route, or more often as may be necessary to determine the accuracy of the device, a control sample shall be placed into the device and the results compared to the original. Should the variation exceed 0.03 percent, an additional control sample shall be tested. Should the variation continue to exceed 0.03 percent, the device shall be deemed inaccurate; repairs and/or shift and L value adjustments made and an additional calibration check performed. The standard for the zero adjustment shall be 0.02 percent. Calibration logs shall be maintained and copies furnished the commissioner upon request. No person other than those licensed or approved by the commissioner shall calibrate or adjust the calibration of this or similar type devices.

La. Admin. Code tit. 7, § XXXI-117

Promulgated by the Department of Agriculture, Dairy Stabilization Board, LR 1:166 (March 1975).

AUTHORITY NOTE: Promulgated in accordance with R.S. 40:891 and R.S. 40:883.