ASTM D1169 standard test method for specific resistance (resistivity) of electrical insulating liquids
28. Report
28.1 Report the following information:
28.1.1 Specific resistance (resistivity) of the sample,
28.1.2 Type of cell used,
28.1.3 Measurement procedure: referee or routine,
28.1.4 Average voltage gradient in the sample while under test in volts per mil (or volts per millimetre),
28.1.5 Temperature of the sample while under test,
28.1.6 Temperature and humidity of the room during test.
28.2 Use the following table as a guide in reporting the values of resistivity:
29. Precision and Bias
29.1 Precision - The precision of this test method has not been determined through an interlaboratory test program. It will be available in July 2006.
29.1.1 A single operator coefficient of variation has been developed from ten results on one material from a single laboratory.
29.1.1.1 The single operator coefficient of variation for resistivity by the referee method at 25°C has been found to be 2.0 %. Therefore, results of two properly conducted tests (each the average of two fillings) by the same operator on the same sample using the same equipment should not differ from each other by more than 5.7 % of their average.
29.2 Bias - Since there is no accepted reference material suitable for determining the bias, no statement can be made at this time.
30. Keywords
30.1 resistivity; specific resistance