DQ, IQ, OQ, And PQ: Concept, Applications and FAQs DQ, IQ, OQ, and PQ are foundational pillars of the validation process in regulated environments, ensuring that equipment and systems are designed, installed, operated, and perform according to strict regulatory and operational standards. These are part of Good Manufacturing Practices (GMP) to ensure that equipment, facilities, and processes meet defined standards of quality, safety, and compliance. Implementing these qualification phases not ... All pharmaceutical companies are required to abide by stringent regulations to ensure their products are safe and effective. Regulatory authorities specifically emphasize on qualification processes in pharma manufacturing facilities. The process of qualification aims to ensure that all aspects of the equipment being used meet regulatory and operational requirements. Moreover, it verifies that the equipment and instrument used are fit for their intended purpose. DQ, IQ, OQ, and PQ, the four ... PQ is a two-letter term that can stand for various meanings, such as Priority Queue, Province du Québec, or Performance Qualification. Find out more possible definitions, categories, and ratings of PQ on Abbreviations.com. PQ is a leading global provider of silicates, silicas and derivative products that are friendlier and contribute to a cleaner, safer world.