ASTM D4047-18
- Standard Test Method for Phosphorus in Lubricating Oils and Additives by Quinoline Phosphomolybdate Method
- standard by ASTM International, 04/01/2018
- Category: ASTM
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1.1 This test method covers the determination of 0.005 % to 10.0 % by mass phosphorus in unused lubricating oil and additive concentrates. There is no reason to doubt its applicability to filtered, used lubricating oils, but no systematic study of this application has been made.
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