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ANNEX VU.K.METHODS OF ANALYSIS TO CONTROL UNDESIRABLE SUBSTANCES IN FEED

[F1B. DETERMINATION OF THE LEVELS OF DIOXINS (PCDD/PCDF) AND PCBs U.K.

CHAPTER II U.K. Sample preparation and requirements for methods of analysis used in offical control of the levels of dioxins (PCDD/Fs) and dioxin-like PCBs in feed

8. Reporting of the results U.K.
8.1. Confirmatory methods U.K.
8.1.4.As the expanded measurement uncertainty is to be taken into account when deciding about the compliance of a sample, this parameter shall be made available. Thus, analytical results shall be reported as x +/– U whereby x is the analytical result and U is the expanded measurement uncertainty using a coverage factor of 2 which gives a level of confidence of approximately 95 %. In the case of a separate determination of PCDD/Fs and dioxin-like-PCBs, the sum of the estimated expanded uncertainty of the separate analytical results of PCDD/Fs and dioxin-like PCBs shall be used for the sum of PCDD/Fs and dioxin-like PCBs.]U.K.