Commission Directive 2009/90/ECShow full title

Article 2 Definitions

For the purpose of this Directive, the following definitions shall apply:

1.

‘limit of detection’ means the output signal or concentration value above which it can be affirmed, with a stated level of confidence that a sample is different from a blank sample containing no determinand of interest;

2.

‘limit of quantification’ means a stated multiple of the limit of detection at a concentration of the determinand that can reasonably be determined with an acceptable level of accuracy and precision. The limit of quantification can be calculated using an appropriate standard or sample, and may be obtained from the lowest calibration point on the calibration curve, excluding the blank;

3.

‘uncertainty of measurement’ means a non-negative parameter characterizing the dispersion of the quantity values being attributed to a measurand, based on the information used.