ASTM D1796 for water and sediment in fuel oils by the Centrifuge method
ASTM D1796 standard test method for water and sediment in fuel oils by the centrifuge method (Laboratory Procedure)
3. Summary of Test Method
3.1 Equal volumes of fuel oil and water saturated toluene are placed in each of two cone-shaped centrifuge tubes. After centrifugation, the volume of the higher gravity water and sediment layer at the bottom of the tube is read.

4. Significance and Use
4.1 The water and sediment content of fuel oil is significant because it can cause corrosion of equipment and problems in processing. The water and sediment content must be known to measure accurately net volumes of actual fuel oil in sales, taxation, exchanges, and custody transfers.