The third international and (Dutch) national trial with reference for water microbiology
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Series / Report no.
Open Access
Type
Report
Language
en
Date
1991-02-28
Research Projects
Organizational Units
Journal Issue
Title
The third international and (Dutch) national trial with reference for water microbiology
Translated Title
Het derde internationale en (nederlandse) national ringonderzoek met refentiematerialen voor de watermicrobiologie
Published in
Abstract
A third trial with reference materials for water microbiology was organized. Thirty-eight Dutch laboratories and 39 laboratories of the EC participated. The design of the trial was the same as in the first and the second trial. Also the test strains were the same: WR1 Escherichia coli and WR3 Enterobacter cloacae. The reference materials of the third trial were more stble and homogeneous than the batches used in the first and the second trial. Improved materials and protocols resulted in better performance in participating laboratories. The variation between the results was less than in the first and the second trial. Insufficient inhibition of the growth of test strain WR3 at a nominal temperature of 44 C, in some laboratories, showed that incubation at 44 C still need some improvements. The use of reference materials may therefore be very useful.<br>
Description
Publisher
Rijksinstituut voor Volksgezondheid en Milieu RIVM
Sponsors
EG/BCR
VHI
HIMH
VHI
HIMH