ISO 3733 Petroleum products and bituminous materials - Determination of water - Distillation method
10 Expressions of results
Report the result as the water content to the nearest 0.05 % if the 2 ml trap has been used, and to the nearest 0.1 % if the 10 ml or 25 ml traps have been used with a 100 ml or 100 g sample.
11 Precision
The criteria described in 11.1 and 11.2 shall be used to judge the acceptability of results (95 % probability) when using the 10 ml or 25 ml traps. The precision when using the 2 ml trap has not been established.
11.1 Repeatability
The difference between two test results, obtained by the same operator with the same apparatus under constant operating conditions on identical test material would, in the long run, in the normal and correct operation of the test method, exceed the values given in Table 4 in only one case in 20.
11.2 Reproducibility
The difference between two single and independent test results, obtained by different operators working in different laboratories on identical test material would, in the long run, in the normal and correct operation of the test method, exceed the values given in Table 4 in only one case in 20.
12 Test report
The test report shall contain at least the following information:
a) a reference to this International Standard;
b) the type and complete identification of the product tested;
c) the result of the test (see clause 10);
d) any deviation, by agreement or otherwise, from the procedure specified;
e) the date of the test.
