ASTM D322 for gasoline diluent in used gasoline engine oils by distillation
11. Report
11.1 Report the result as the Diluent Content, ASTM D322 - IP 23.
12. Precision and Bias
12.1 The precision of this test method as obtained by statistical examination of interlaboratory test results is as follows:
12.1.1 Repeatability - The difference between successive test results, obtained by the same operator with the same apparatus under constant operating conditions of identical test material, would in the long run, in the normal and correct operation of the test method, exceed the following value only in one case in twenty:
0.6 volume %
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 correct operation of the test method, exceed the following value only in one case in twenty:
1.4 volume %
12.2 Bias - The procedure in this test method has no bias because the volume percent of gasoline diluent can only be defined in terms of this test method.
13. Keywords
13.1 distillation; engine oils; gasoline distillation; used
