OS GSO EN 12634:2026
EN 12634:1998
Omani Standard
Current Edition
·
Approved on
17 September 2026
Petroleum products and lubricants - Determination of acid number - Non-aqueous potentiometric titration method
OS GSO EN 12634:2026 Files
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OS GSO EN 12634:2026 Scope
This European Standard specifies a method for determination of acid number by potentiometric titration, of lubricating oils and additives soluble in mixtures of propan-2-ol, dimethylsulfoxide and toluene. It is applicable in the range 0,1 mg KOH/g to 250 mg KOH/g, and to unused and used lubricating oils and additives.
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