ASTM D2171 Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer
10. Report
10.1 Always report the test temperature and vacuum with the viscosity test result. For example, viscosity at 60°C (140°F) and 300 mm Hg vacuum, in Pa•s.
11. Precision and Bias
11.1 The following criteria (see Note 1) should be used for judging the acceptability of results (95 % probability):
11.1.1 Repeatability - Duplicate results by the same operator using the same viscometer should not be considered suspect unless they differ by more than 7 % of their mean.
11.1.2 Reproducibility - The results submitted by each of two laboratories should not be considered suspect unless the two results differ by more than 10 % of their mean.
