ISO 17994:2014 PDF

Scope: This International Standard specifies an evaluation procedure for comparing two methods with established performance characteristics according to ISO/TR 13843 and intended for the quantification of the same target group or species of microorganisms. This International Standard provides the mathematical basis for the evaluation of the average relative performance of two quantitative methods against chosen criteria for the comparison. It does not provide data for assessment of the precision of the methods being compared. It is appropriate that the precision of methods is assessed as part of their performance characterization. This International Standard does not provide methods for the verification of method performance characterization in a single laboratory.

ISO 17994:2014 Referenced Document

ISO 8199:2005 Water quality - General guidance on the enumeration of micro-organisms by culture
ISO/TR 13843:2000 Water quality - Guidance on validation of microbiological methods

2014 ISO 17994:2014 Water quality - Requirements for the comparison of the relative recovery of microorganisms by two quantitative methods
2004 ISO 17994:2004 Water quality - Criteria for establishing equivalence between microbiological methods