The fifth international and (Dutch) national trial with reference materials for water microbiology
Mooijman KA Havelaar AH van Strijp-Lockefeer NGWM Heisterkamp SH
Mooijman KA
Havelaar AH
van Strijp-Lockefeer NGWM
Heisterkamp SH
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Series / Report no.
Open Access
Type
Report
Language
en
Date of publication
1992-06-30
Year of publication
Research Projects
Organizational Units
Journal Issue
Title
The fifth international and (Dutch) national trial with reference materials for water microbiology
Translated Title
Het vijfde internationale en (nederlandse) nationale ringonderzoek met referentiematerialen voor watermicrobiologie
Published in
Abstract
Thirty-nine Dutch laboratories and 33 laboratories of the EC participated in a fifth trial with reference materials for water microbiology. Reference materials with the test strains WR63 Enterococcus faecium and WR52 Staphylococcus warneri were used. The materials were analysed for total aerobic viable bacteria by a reference method and the national standard method, both with incubation at 22 and 37 degrees C. After statistically analysing the results, the repeatability (r) and reproducibility (R) were calculated. Very good results were found for r and R. Especially the values of r found with the material with strain WR63 were very close to the theoretical optimum.<br>
Description
Publisher
Rijksinstituut voor Volksgezondheid en Milieu RIVM
Sponsors
EG/BCR
HIMH
VHI
HIMH
VHI