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Impurity Removal

[ Lubrication Knowledge Menu ] [ Products and Services Directory

Impurity removal: Once the oil is separated into fractions, it must be further treated to remove impurities, waxy resins, and asphalt. Oils that have been highly refined are usually referred to as premium grades to distinguish them from grades of lesser quality in the producer's line of products. However, there are no criteria to establish what constitutes premium grade.

 

 

 

 

 

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