ASTM D6082 High Temperature Foaming Characteristics of Lubricating Oils
12. Report
12.1 Report the following information:
12.1.1 Report optional blending if implemented.
12.1.2 Foaming tendency (static foam).
12.1.3 Volume of kinetic foam immediately before air disconnect.
12.1.4 Total volume immediately before air disconnect.
12.1.5 Foam stability.
12.1.5.1 Volume of static foam for selected Option after air disconnect.
12.1.6 Collapse time.
12.1.7 Total volume increase.
12.1.8 Percent total volume increase.
13. Precision and Bias
13.1 Precision - The precision of this test method, as determined by statistical examination of interlaboratory results, is as follows (see Note 10):
NOTE 12 - Precisions for Options 1, 2, 3, 4, and 5 are under development without optional blending.
13.1.1 Repeatability (r) - The difference between two successive 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 following values in only one case in twenty. See Table 1.
13.1.2 Reproducibility (r) - 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 correct operation of the test method exceed the following values in only one case in twenty. See Table 2.
NOTE 13 - These values are applicable to passenger car motor oils only.
13.2 Bias - The procedure in Test Method D6082 for measuring high temperature foaming has no bias because the value of the foaming tendency is defined only in terms of this test method.
14. Keywords
14.1 foaming; high temperature lubrication; lubricants
