In March 2023, API MPMS Chapter 9.1 ”Density Determination, Section 1-Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method” – ASTM D1298 has been editorially enhanced and issued as ASTM D1298-12b(2017)e1. QuantityWare has reviewed this new version and confirms compliance with BCS 3.0 implementations for hydrometer correction calculations.