ISO 13293:2012 specifies requirements for gas blender training programmes and the competencies required of an individual in order to obtain a gas blender certificate from a training organization, attesting that he/she has met or exceeded the requirements specified in ISO 13293:2012.
ISO 13293:2012 specifies two levels of gas blender qualification, as follows:
Level 1 gas blender;
Level 2 gas blender.
ISO 13293:2012 recognizes that a training programme can be organized and delivered in a modular way.