Fuel and Lubricant Testing


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ASTM D94 - Saponification Number of Petroleum Products


We perform the saponification number test by ASTM D94 to measure the amount of alkali that will react with additives in petroleum products. Petroleum products can contain additives that react with alkali to form metal soaps. Fats are examples of such additives. Certain used engine oils, especially from turbine or internal combustion engines, can also contain chemicals that will similarly react or saponify with alkali. The saponification number expresses the amount of base that will react with 1 g of sample when heated in a specific manner.

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Sample quantity required: 50 ml

ASTM D94 corresponds to ISO 6293 and IP 136.

For additional information on this test method or to purchase a copy of the method, please click HERE to open a new window and visit the ASTM website.