API MPMS CH 22.6: Testing Protocols for Gas Chromatographs : Reaffirmed

API RP 1174: Onshore Hazardous Liquid Pipeline Emergency Preparedness and Response : Reaffirmed

API MPMS CH 9.1: Standard Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method : Edition 4

API STD 20G: Welding Services for Equipment used in the Petroleum and Natural Gas Industry : Reaffirmed