OpenLegislation

Division 7.3.2

United Kingdom

Original text. Later amendments are not shown.

Calculation from bioanalytical results (corrected for blank and recovery) of multiple analyses of samples (n ≥ 6) contaminated at the decision limit of the confirmatory method, as the lower endpoint of the data distribution at the corresponding mean BEQ value:

Cut-off value = BEQDL – 1,64 × SDR

with

SDR

  • standard deviation of bioassay results at BEQDL, measured under within-laboratory reproducibility conditions