SAE International
SAE Standards Works
SAE International
Contact Us | Help | Shopping Cart
SAE Login

ARP5088B - Test Method for the Determination of Total Acidity in Polyol Ester and Diester Gas Turbine Lubricants by Automatic Potentiometric Titration

Details
Not available for purchase at this time.
Document Number: ARP5088B
Project Initiation: 01-17-2013
Project Number:
Revision Number: B
Sponsor Name: Patrick Hellman
Title
Test Method for the Determination of Total Acidity in Polyol Ester and Diester Gas Turbine Lubricants by Automatic Potentiometric Titration
Scope
The test method describes the procedure for determination of the total acid number of new and degraded polyol ester and diester based gas turbine lubricants by potentiometric titration technique. The method was validated to cover an acidity range 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 lubricant.
Rationale
This document has been modified based on the results of a round robin which took place during 2013. Major modifications include use of combination electrodes and recognizing that the volume of samples available from service or laboratory tests may make using a 20 g sample size impractical for clean oils, thus a 2.5 g sample size may be used if the 20 g sample size cannot be obtained. Precision statements have been updated.
Recent Activity
DateType