00000nam 2200000za 4500 9.855874 CaOODSP 20241203113642 cr ||||||||||| 180426s1987 onc #ot f|0| 0 eng d 0-662-15425-8 CaOODSP eng eng fre n-cn--- CW69-4/21E-PDF Turle, Richard. CWS guidelines to practical quality assurance for contracted chemical analysis [electronic resource] / Richard Turle ; R. J. Norstrom. Ottawa : Canadian Wildlife Service, Environment Canada, 1987. 25 p. Technical report series ; no. 21 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references. "The concern over the quality of the environment has led to many chemical analyses. In order to identify problems, accurate and precise analyses are demanded. The reasons for a Quality Assurance Program for an analytical contract are outlined. Various procedures such as control charts, use of reference materials and audits are discussed. Recommendations are made for the reporting of detection limits and low level data. Criteria are presented for the acceptance or rejection of results from a contract analytical laboratory. Proposed contract clauses and suggestions for additional reading are included"--Abstract. Includes abstract in French. gccst Chemicals gccst Quality control Norstrom, R. J. (Ross J.) Canada. Environment Canada. Canadian Wildlife Service. Technical report series (Canadian Wildlife Service) no. 21 (CaOODSP)9.504438 PDF 704 KB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-21-eng.pdf CW69-5/21E