This paper discusses the validity of estimators of uncertainty (dispersion, variance and its functions such as precision, standard deviation, and others) of measurements to be used to assess compliance. Estimates of uncertainty in analytical methods measurement were shown describing inconsistent trends in mycotoxins, sodium, grasses oils, and calibration curves for carotenoids mycotoxins. The data were certified by proficiency tests, precision experiments (collaborative studies), and calibration routines. The uncertainty of sampling, was considered, and its invalidity can be concluded. Considering the system of generation of uncertainty as a whole, a systematic estimation for foods and foods processing using standard or specific sampling plans is suggested. Moreover, stochastic rules for verifying compliance in foods and other products were established.
variance; validation of analytical methods; sampling techniques; statistical quality control; capability; calculation of uncertainty
