10. Report
10.1 Report the result to the nearest degree as the ASTM-IP dropping point, ASTM D566.
11. Precision and Bias
11.1 Precision - The precision of this test method as determined by statistical examination of interlaboratory results is as follows:
11.1.1 Repeatability - The difference between two test re-sults 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 value only in one case in twenty:
Repeatability = 7°C
11.1.2 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 in only one case in twenty:
Reproducibility = 13°C
NOTE 4 - Although the cooperative data does show that precision varied considerably with dropping point range, a statistical analysis of the composite of the cooperative data was used to generate the precision statement. This test data is given in the article "Report of ASTM Technical Committee G on Dropping Point
Methods for Lubricating Grease" by P.R. McCarthy appearing in the NLGI Spokesman, Vol 31, 1967, page 76.
11.1.3 Bias - There is no bias in this test method because the value of the dropping point can be defined only in terms of the tes tmethod.
12. Keywords
12.1 dropping point; grease; lubricating grease
