11. Report
11.1 Report the following information:
11.1.1 The toluene dilution ratio (in accordance with Annex A1).
11.1.2 The separability number of the oil sample as the deviation in percent transmittance to the nearest 0.1 %.
12. Precision and Bias
12.1 Precision - The precision of this test method was determined in an interlaboratory study (ILS) conducted in 2011.
12.1.1 Repeatability - The difference 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 ofthis test method, exceed the following, only in one case in twenty:
12.1.2 Reproducibility - The difference between two single and independent results, obtained by different operators working in different laboratories on identical test material would, in the long run, in the normal and the correct operation of the test method, exceed the following, only in one case in twenty:
12.1.3 Example of Precision Calculation:
12.2 Bias - Today there is no accepted reference material suitable for testing the stability reserve of oils (in this test method estimated as a separability number) and bias has so far been impossible to determine.
13. Keywords
13.1 compatibility; heavy fuels oils; phase separation; separability number; stability reserve; transmittance