ISO standards download ISO 91-2-1991 pdf download – Petroleum measurement tables – Part 2: Tables based on a reference temperature of 20 “C ISO 91-2-1991 pdf download - Petroleum measurement tables - Part 2: Tables based on a reference temperature of 20 “C. 1 Scope This part of ISO 91 refers to Computer implemen- tation procedures for the correction of... 02-19 Download Now