Measurement range, %
Repeatability index (relative standard
deviation of repeatability) a0r
4
25
0.01 to 12
Accuracy index (limits within which the
relative measurement error with
ÿ =
0.95 is located) ± 60
1.96
1) See [5].
7
Note - It is allowed to calculate the standard deviation of the error based on the results of previous
periods to determine the
parameters of the control chart. In this case, the standard deviation of the error in the implementation of this method in a particular
laboratory should be less than the value obtained by formula (13).
Table 2 - Values of indicators of accuracy and repeatability in the implementation of the method of
IR spectroscopy In percent
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