ASTM D2129 Test Method for Color of Clear Electrical Insulating Liquids (Platinum-Cobalt Scale)
9. Report
9.1 Report which method was used, Test Method D2129 or Test Method D1500.
9.2 Report as the color, the number of the standard that most nearly matches the test specimen. In the event that the color lies midway between two standards, report the darker of the two.
9.3 If, owing to differences in hue between the test specimen and the standards, a definite match cannot be obtained, report the range over which an apparent match is obtained, and report the test specimen as "off-hue".
10. Precision and Bias
10.1 An estimate of the repeatability has been developed based on data supplied by a single laboratory. These data are presented in Appendix XI. These results suggest that an estimate of the 95 % repeatability limit for color by Test Method D2129 is 15.1 % of the test result or approximately 4.5 when the mean color level is 30.
10.2 It is not possible to specify the reproducibility of the procedure in Test Method D2129 for measuring color of clear dielectric liquids because there is an insufficient number of laboratories available to participate in an interlaboralory round robin program required to produce the necessary data.
10.3 No informalion can be presented on the bias of the procedure in Test Method D2129 for measuring the color of clear dielectric liquids because no material having an accepted reference value is available.
11. Keywords
11.1 clear liquids; color; insulating liquids; plalinum-coball color scale
