ASTM D246 Method for Distillation of Creosote and Creosote-Coal Tar Solutions
11. Report
11.1 Report the cumulative percentages to the specified temperatures and distillation residue, on a water-free basis, to the nearest 0.1 %.
12. Precision and Bias
12.1 The following criteria should be used for judging the acceptability of results at the 95 % probability level:
12.1.1 Repeatability - Duplicate determinations by the same operator should not be considered suspect unless the reported percentages differ by more than 1.1.
12.1.2 Reproducibility - The results submitted by two different laboratories should not be considered suspect unless the reported percentages differ by more than 2.9.
13. Keywords
13.1 coal-tar; creosote; distillation; wood-preservative
