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Precision and Test report in EN 14719 (Pulp, paper andboard-Determinationof the DIPN content by solventextraction)
Posted Date:2026/1/27
9 Precision
From an interlaboratory test (n = 7) with four test pieces the test method described above gave repeatability and reproducibility results as shown in Table 1. The repeatability has been calculated as the coefficient of variation from the two replicates from each laboratory. The reproducibility is given as the coefficient of variation (CV) between the means from the seven laboratories.
Table 1 -- Repeatability and reproducibility found in an interlaboratory test
|
Sample
|
Mean value of DIPN mg/kg
|
Repeatability(r) CV %
|
Reproducibility(R) CV %
|
|
1
|
21.34
|
2.4
|
3.0
|
|
2
|
35.29
|
2.2
|
4.9
|
|
3
|
42.84
|
1.1
|
4.2
|
|
4
|
108.52
|
1.1
|
5.4
|
10 Test report
The test report shall include the following information:
a) reference to this European Standard:
b) date and place of testing;
c) complete identification of the sample tested;
d) result, expressed as milligrams DIPN per kilogram of pulp, paper or board;
e) any deviation from the specified procedure, or other circumstances that may have affected the results.