ASTM D3104 Standard Test Method for Softening Point of Pitches (Mettler Softening Point Method)
10. Report
10.1 Report the softening point, as indicated by the digital readout, to the nearest 0.1 °C. If converting to degrees Fahrenheit, report to the nearest 0.2 °F. Experience indicates that duplicate determinations are unnecessary. If any error occurs, or is suspected, in carrying out the details of this procedure, discard the results and make a second run.
11. Precision and Bias
NOTE 3 - The precision given was determined using the old instrument model and the associated calibration, sample presentation, and measurement procedures. This precision statement is retained as valid also for the new instrument model and the associated calibration, sample presentation and measurement procedures. Committee D02.05 Section D assumes the new instrument and procedures allow equal or better precision than the old. However, to confirm, it is recommended to run an Interlaboratory Study as soon as a sufficient number of users of the new instrument models are available.
11.1 The following criteria shall be used for judging the acceptability of any result (95 % confidence level):
11.1.1 Repeatability - Duplicate values by the same operator shall not be considered suspect unless they differ by more than 0.5 °C.
11.1.2 Reproducibility - The values reported by each of two laboratories shall not be considered suspect unless they differ by more than 1.5 °C.
11.1.3 Bias - This test method has no bias because the value of softening point is defined in terms of this test method.
12. Keywords
12.1 METTLER TOLEDO; pitch; softening point
