ASTM D874
  • ASTM D874 Sulfated Ash From Lubricating Oils And Additives

    ASTM D874 Sulfated Ash From Lubricating Oils And Additives

    The sample is ignited and burned until only ash and carbon remain. After cooling, the residue is treated with sulfuric acid and heated at 775°C until oxidation of carbon is complete. The ash is then cooled, re-treated with sulfuric acid, and heated at 775°C to constant weight.

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  • ASTM D482 Ash Content Oven

    ASTM D482 Ash Content Oven

    Knowledge of the amount of ash-forming material present in a product can provide information as to whether or not the product is suitable for use in a given application. Ash can result from oil or water-soluble metallic compounds or from extraneous solids such as dirt and rust

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