A T I Air Techniques International

ATI, founded in 1961, revolutionized the world of specialized test equipment with the introduction of its first portable photometer. Since then, ATI has grown to become the global leader in designing and manufacturing precision instruments used to test and certify HEPA filters, filter media and cartridges, respirators, and protective masks. Our photometers, known for their quality and reliability, are trusted worldwide in critical environments that protect human health and essential infrastructure.