We perform hydrolytic stability testing by Def Stan 05-50 (Part 61) Method 6 to measure an oil’s ability to resist chemical decomposition when contaminated with water. This is measured by mixing the oil sample with a measured amount of distilled water and heating the mixture at 90C for an extended period of time. The sample’s acidity is measured periodically during the test. At the conclusion of the test, the excess water is removed from the oil sample, and the sample is left to stand for 24 hours. The hydrolytic stability is estimated by comparing the sample’s final appearance, the water content of the sample, and the acidity increase of the sample during the test.
We also perform hydrolytic stability testing by ASTM D2619 and FTM 3457. These different test methods use different instruments or procedures or are used for certain sample types. Click on the test method number to learn more about each test.
Sample quantity required: 500 ml
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