290 



TABLE 280.— DEGREES API CORRESPONDING TO SPECIFIC GRAVITIES 



60°/60°F 



(15-56°/15.56°C) for petroleum oils. 



In order to avoid confusion and misunderstanding the American Petroleum Institute, the 

 Bureau of Mines, and the National Bureau of Standards have agreed that a scale based on 

 the modulus 141.5 shall be used in the United States Petroleum Industry and shall be 

 known as the API scale. The United States Baume scale based on the modulus 140 will 

 continue to be used for other liquids lighter than water. 



„ . „ T 141.5 



SMITHSONIAN PHYSICAL TABLES 



