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dc.contributor.authorMooijman KA
dc.contributor.authorHavelaar AH
dc.contributor.authorHeisterkamp SH
dc.contributor.authorvan Strijp-Lockefeer NGWM
dc.date.accessioned2017-02-20T06:49:57
dc.date.issued1991-02-28
dc.identifier148602004
dc.description.abstractA 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>
dc.description.sponsorshipEG/BCR
dc.description.sponsorshipVHI
dc.description.sponsorshipHIMH
dc.format.extent82 p
dc.language.isoen
dc.publisherRijksinstituut voor Volksgezondheid en Milieu RIVM
dc.relation.ispartofRIVM Rapport 148602004
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/148602004.html
dc.subject11nl
dc.subject91-3nl
dc.subjectreferentiematerialennl
dc.subjectringonderzoeknl
dc.subjectcoligroepnl
dc.subjectkweekmedianl
dc.titleThe third international and (Dutch) national trial with reference for water microbiologyen
dc.title.alternativeHet derde internationale en (nederlandse) national ringonderzoek met refentiematerialen voor de watermicrobiologienl
dc.typeReport
dc.date.updated2017-02-20T05:49:57Z
html.description.abstractA 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.&lt;br&gt;


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