00000nam 2200000za 4500 9.850010 CaOODSP 20241203113641 cr ||||||||||| 180115s1986 onc |||fo f000 0 eng d CaOODSP eng n-cn--- En13-5/86-170E-PDF Alkema, H. Summary report, PPQC studies 37-48 (Sept. 85 - Aug. 86) for trace metals, major ions, nutrients and physical parameters in surface waters [electronic resource] / H. Alkema. [Burlington, Ont.] : [Quality Assurance and Methods Section, National Water Research Institute], [1986]. 1 v. (various pagings) NWRI contribution ; no. 86-170 Title from cover. Digitized edition from print [produced by Environment and Climate Change Canada]. "This compiled report of twelve quality control studies (QC) evaluates the chemical analysis of surface waters for laboratories in the Prairie Province Quality Control (PPQC) program. This report, which covers the period from September 1985 to August 1986 (QC studies PP 37 to PP 48), describes the following: study design, treatment of data, performance indicators, and comments on individual laboratory performance"--Abstract. gccst Water quality gccst Laboratories gccst Quality control Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 86-170 (CaOODSP)9.844121 PDF 11.32 MB https://publications.gc.ca/collections/collection_2018/eccc/En13-5-86-170-eng.pdf