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Assessment of the direct epifluorescent filter technique (DEFT) with visual or image analyser counting for the enumeration of the total flora in raw milk



Assessment of the direct epifluorescent filter technique (DEFT) with visual or image analyser counting for the enumeration of the total flora in raw milk



Lait 67(1): 77-95



167 raw milk samples with counts ranging from 7 x 10superscript 3 to 4 x 106 c.f.u./ml were analysed in duplicate by the DEFT method and the reference standard plate count (SPC) method. Coeff. of correlation between DEFT and SPC was 0.914, and the accuracy expressed by the residual standard deviation from the regression SPC on DEFT was 0.245 c.f.u./ml in log10. The coeff. of variation of repeatability averaged 14.8% and was nearly constant at the various levels of contamination.

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Accession: 001533187

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