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SAE ARP5991 Rev B

Current Revision

Test Method for the Determination of Water Concentration in Polyol Ester and Diester Aerospace Lubricants by Coulometric Karl Fischer Titration


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The test method describes the procedure for the direct determination of water concentration in polyol ester and diester based aerospace lubricants by commercially available automated coulometric Karl Fischer titration instruments. The method was validated to cover the water concentration range of 150 to 3500 µg/g. The method may also be suitable for the determination of water concentrations outside this range and for other classes of fluids; however, the precision statement shall not be applicable for such uses.

SDO SAE: SAE International
Document Number ARP5991
Publication Date May 17, 2024
Language en - English
Page Count
Revision Level B
Supercedes
Committee
Publish Date Document Id Type View
May 17, 2024 ARP5991B Revision
Nov. 2, 2022 ARP5991A Revision
Dec. 12, 2002 ARP5991 Revision