Quality Assurance provides professional support to entire PSO in testing POL products and development and implementation of international management systems. The quality control laboratories at PSO are equipment with state of the art modern computerized petroleum testing equipment. Every batch of a POL product both procured from local sources, imported or manufactured by PSO is subjected to strict quality control tests before it is released for marketing.  All PSO laboratories are certified to international quality standard i.e. ISO 9001:2000. Quality Assurance also provides full support in certification of various PSO departments such as Operations, Retail Fuel, Industrial Consumers, aviation, Mobile Vans, etc., in getting certification to international managements system such as ISO 9001:2000 Quality Management System, ISO 14001:2004, Environmental Managements System and OHSAS 18001:1999 Occupational Health and Safety Management System. Such support includes documentation, internal audit, training, etc.