Wisconsin Administrative Code
Department of Natural Resources
NR 100-199 - Environmental Protection General
Chapter NR 149 - Laboratory Accreditation
Subchapter VII - Quality Systems
Section NR 149.40 - Standard operating procedures
Current through August 26, 2024
(1) A laboratory shall maintain written standard operating procedures that document or reference activities needed to maintain its quality systems and that enable performing or reproducing an analysis in its entirety as performed at the laboratory. Each laboratory shall develop, maintain, and keep current its standard operating procedures for both sample preparation and analysis.
Note: Sample preparation includes digestions, distillations, extractions, concentrations, dilutions, and clean-up performed on samples prior to the determinative analytical step.
(2) Standard operating procedures may be documents written by laboratory personnel or may consist entirely of copies of published documents, manuals, or procedures if the laboratory follows the chosen source exactly.
(3) Standard operating procedures may consist, in part, of copies of published documents, manuals, or procedures if all the following conditions are met:
(4) Standard operating procedures shall indicate the dates of issue or revision.
(5) When the standard operating procedure is written by the laboratory, each standard operating procedure shall include, address, or refer to all the following elements, if applicable:
