By netkonnexion API Q1 & Q2 Basic Principles ISO 9001 ISO Standards API Q1 and Q2 Applications – CHARTER4 supported more than 30% of applicants Quality Management in the Oil and Gas industry falls under the API Specifications Q1 and Q2. Last year after the 9th Edition API Q1 Standard upgrade, Charter 4 Solutions assisted 30% of Applicants in the UK. This year, the figure has increased.