API MPMS Chapter 10.9:2024
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MPMS Chapter 10-Sediment and Water – Section 9 – Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration, Fourth Edition
American Petroleum Institute , 11/01/2024
API MPMS Chapter 10.9:2024 Fourth Edition PDF
This test method covers the determination of water with true concentration range from 0.02 % to 5.00 % by mass or volume in crude oils using Procedures A and B and from 0.04 % to 3.75 % by mass or volume for Procedure C. Mercaptan (RSH) and sulfide (S− or H2S) as sulfur are known to interfere with this test method, but at levels of less than 500 μg ⁄g [ppm(m)], the interference from these compounds is insignificant (see Section 6).
This test method is intended for use with standard commercially available coulometric Karl Fischer reagent.
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