ASTM D1093 for Acidity of Hydrocarbon Liquids and Their Distillation Residues
10. Report
10.1 If the methyl orange indicator is used, report the material as acidic if a pink to red color is observed.
10.2 If the phenolphthalein indicator is used, report the material as basic if a pink to red color appears.
10.3 If neither indicator shows the color changes specified, the material can be reported neutral.
11. Precision and Bias
11.1 In case of pass-fail data, or other qualitative tests, no generally accepted method for determining precision or bias is currently available.
12. Keywords
12.1 distillation residue acidity; distillation residue basicity; hydrocarbon acidity; hydrocarbon basicity
