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 : 96] petroleum products and lubricants - Petroleum oils and other fluids - Determination of rust - Preventing characteristics in the presence of water (First Revision)
Ministry of Defence, Ministry of Heavy Industries, Ministry of Railways, Ministry of Steel, Ministry of Mines, Ministry of Commerce and Industry, Ministry of Petroleum and Natural Gas