ARP5088C Test Method for the Determination of Total Acidity in Polyol Ester and Diester Gas Turbine Lubricants by Automatic Potentiometric Titration
Revised
03/18/2024
- Features
- Issuing Committee
- Content
- The test method describes the procedure for determination of the total acid number (TAN) of new and degraded polyol ester and diester-based gas turbine lubricants by the potentiometric titration technique. The method was validated to cover an acidity range of 0.05 to 6.0 mg KOH g-1. The method may also be suitable for the determination of acidities outside of this range and for other classes of lubricants.
- Content
- As a part of the SAE Five-Year Review process, several modifications have been incorporated including ASTM water purity, autosampler carousel language, and reduced solvent size.
- Pages
- 9
- Citation
- SAE International Recommended Practice, Test Method for the Determination of Total Acidity in Polyol Ester and Diester Gas Turbine Lubricants by Automatic Potentiometric Titration, SAE Standard ARP5088C, Revised March 2024, Reaffirmed November 2006, Issued January 1998, https://doi.org/10.4271/ARP5088C.