ASTM D4746 for Determination of Quinoline Insolubles (QI) in Tar and Pitch
14. Report
14.1 Report the quinoline insoluble (QI) content to the nearest 0.1 %.
15. Precision and Bias
15.1 Repeatability - Duplicate values by the same operator shall not be considered suspect unless they differ by more than 0.2 %.
15.2 Reproducibility - The values reported by each of two laboratories, representing the arithmetic average of duplicate determinations, shall not be considered suspect unless they differ by more than 0.3 %.
16. Keywords
16.1 coal-tar insolubles; pitch; pressure filtration; QI; quinoline-insolubles; tar
