7 Expression of results
Add 3 °C to the temperature recorded in 6.7.4 or 6.10 and report this as the pour point, or lower pour point, as applicable.
8 Precision
8.1 Repeatability
The differente between successive 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 3 °C only in one case in 20. Differentes greater than this should be considered suspect.
8.2 Reproducibility
The differente between two single and independent results, obtained by different operators working in different laboratories on nominally identical test material would, in the long run, in the normal and correct operation of the test method, exceed 6 °C only in one case in 20. Differentes greater than this should be considered suspect.
NOTE 5 The precision statements were prepared with data on ten new (unused) mineral oil-based lubricants and 16 assorted fuel oils tested by 12 co-operators. The mineral oil-based lubricants had pour points ranging from -48 °C to -6 °C, while the fuel oils had pour Points ranging from -33 °C to +51 °C. The following precision data was obtained:
9 Test report
The test report shall contain at least the following information:
a) sufficient details for complete identification of the product tested;
b) a reference to this International Standard;
c) the result of the test (see clause 7);
d) any deviation, by agreement or otherwise, from the procedures specified (see clause 6);
e) the date of the test;
f) whether the test was determined by an automatic instrument.