1. ASTM D 2106-07(2012). Standard test method for determination of amine acid acceptance (alkalinity) of halogenated organic solvent.
2. ASTM D 1614-09.
3. Standard test method for alkalinity in acetone.
4. ISO 755-2-81. Butan-1-ol for industrial use - Methods of test - Part 2: Determination of acidity -Titrimetric method. Withdrawn 2002.
5. ISO 756-2-81. Propan-2-ol for industrial use - Methods of test - Part 2: Determination of acidity - Titrimetric method.