Article 4. Standard Operating Procedures
§ 5711. Laboratory Analyses Standard Operating Procedures
(a) The laboratory shall develop, implement, and maintain written standard operating procedures
(SOP) for the following laboratory processes:
(1) Sample preparation. Sample preparation SOP(s) shall address the following:
(A) Sample homogenization;
(B) Handling and storage;
(C) Preservation; and
(D) Hold time.
(2) Test methods. Each test method SOP shall address the following:
(A) Test method name;
(B) Applicable analytes and matrices;
(C) Method sensitivity;
(D) Potential interferences with the analysis, if any;
(E) Analytical instruments used for testing;
(F) Types, frequency, and acceptance criteria for quality control samples;
(G) Types, frequency, and acceptance criteria for calibration standards;
(H) Procedure for analyzing analytical batch samples;
(I) Calculation of results, if any; and
(J) Reagent, solution, standards, and reference material preparation, if any.
(b) The supervisory or management laboratory employee shall review, approve, sign, and date
each SOP and each revision thereto.
(c) The laboratory shall keep each SOP at the laboratory premises and ensure that each SOP is
accessible to laboratory employees during operating hours.
(d) The laboratory shall make each SOP available for inspection by the Bureau upon request, as
well as any other SOPs associated with the licensee’s ISO/IEC 17025 certificate of accreditation.
Authority: Section 26013, Business and Professions Code. Reference: Sections 26100, 26102,
26104 and 26110, Business and Professions Code