Historical
ISO 91-1:1992
Petroleum measurement tables -- Part 1: Tables based on reference temperatures of 15 degrees C and 60 degrees F. DOES NOT INCLUDE TABLES
Refers to the tables published by the American Petroleum Institute (API, USA), the American Society for Testing and Materials (ASTM, USA) and the Institute of Petroleum (IP, UK) and subsidiary documents, correcting the printing errors in these publications. Standard reference temperature is 15 °C.
International Organization for Standardization [iso]