sense that it should demonstrate the correct identity of the measured analyte and the

absence of interferences. For the purposes of quantitation the result as calculated

according to Section 6.5 shall be taken as the true value.

(DESCRIPTION)

8. PRECISION

according to ISO 5725-1990 'Accuracy (Trueness and Precision) of Measurement

Methods and Results', Parts 1-6.

8.1 Validation

involving [NUMBER] laboratories. Each participant in this experiment obtained

[NUMBER] samples of [ANALYTE]-free [MATRIX] together with sets of [NUMBER]

samples of [MATRIX] fortified with [ANALYTE] at levels of approx. [LEVEL]

[MASS]/kg respectively.

calibration samples could be corrected.

8.2 Repeatability

[MASS] [ANALYTE]/kg [MATRIX] for the 95% probability level yielded the following

performance characteristics:

Reproducibility:R=[LEVEL][MASS][ANALYTE]/kg

values of r and R.

8.3 [LIMIT]

[BLANK] (n _ 20) plus three times the standard deviation of the mean - was found to be

in the range of [RANGE] [MASS] [ANALYTE]/kg [MATRIX].

Thus the method is capable of quantitative determination of [ANALYTE] at a minimum

level of [LEVEL] [MASS]/kg [MATRIX].

8.4

between the restriction for [ANALYTE] - i.e. [RESTRICTION] - and [SML or QM],

calculated from the analyte concentration in [MATRIX] determined by this method, can

be decided by means of the critical difference CrD95.