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 density 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. A determination of water and sediment content is
required to measure accurately net volumes of actual fuel oil in
sales, taxation, exchanges, and custody transfers.
5. Apparatus
5.1 Centrifuge:
5.1.1 Use a centrifuge capable of spinning two or more