LAC 51:XII.1112. Cleaning of Analytical Instrumentation

A. A thorough cleaning of analytical instrumentation (particularly continuous monitoring turbidimeters, disinfectant residual monitors, and pH meters) shall be performed, as necessary, prior to performing any calibration/validation. On a weekly basis, continuous monitoring turbidimeters and continuous disinfectant residual monitors shall be inspected to determine if there is any material or sedimentation in the measuring chambers. Records of such inspection/cleaning shall be kept for at least three years and such records shall include meter location (e.g., model and serial number), dates of cleaning, and the name of the person performing the cleaning.