Methods of test for petroleum and its products [P : 16] crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method (Fourth Revision)
Methods of test for petroleum and its products [P:2] petroleum products and lubricants - Neutralization number - Potentiometric titration method (Second Revision)
Methods of test for petroleum and its products [ P : 32 ] crude petroleum and liquid or solid petroleum products - Determination of density or relative density - Capillary stoppered pyknometer and graduated bicapillary pyknometer methods (Third Revision)