105 CMR 180.355
Standard - Evaluation of Equipment, Methods, Reagents
Each laboratory shall maintain records to assure that the following practices are performed:
(A) Preventive maintenance, periodic inspection, and testing for proper operation of equipment and
instruments as may be appropriate;
(B) Validation of methods;
(C) Evaluation of reagents and volumetric equipment;
(D) Surveillance of results; and remedial action to be taken in response to detected defects.