Accreditation and Quality Assurance

, Volume 9, Issue 8, pp 445–449

The assessment of compliance with legal limits. Part 2. How to consider both type I and type II errors when working in the concentration domain

General Paper

DOI: 10.1007/s00769-003-0753-2

Cite this article as:
Desimoni, E., Brunetti, B. & Cattaneo, R. Accred Qual Assur (2004) 9: 445. doi:10.1007/s00769-003-0753-2


Considering the uncertainty of measurement when assessing compliance with reference values given in compositional specifications and statutory limits is still a controversial matter. In theory, assessing compliance requires considering both type I (false positive) and type II (false negative) errors. The more the concentration of the analyte in the sample under investigation is close to the allowed concentration limit, the more critical it is to consider both types of errors. This paper describes how this could be done. The matter is discussed in the light of the most recent literature information.


Uncertainty of measurement Legal limits Type I and type II errors Maximum concentration value and minimum concentration value Minimum detectable inadmissible concentration and maximum detectable admissible concentration 

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.DiProVeUniversità degli Studi di MilanoMilanItaly