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ATTMA, the Air Tightness Testing and Measurement Association are best known for running Competent Person Schemes across the UK, Spain, Australia and Dubai. The ATTMA provides assurance of quality by requiring members to be trained, insured and audited on a regular basis. The ATTMA also provides guidance to key industry stakeholders around the world and holds the largest database of test results and data in the world, collecting information from approximately 14,000 tests each month. ATTMA are pleased to offer training and quality assurance for testing to Passivhaus standards.