Purafil manufactures air-filtration chemicals and equipment to remove gaseous contaminants and particulates from a variety of applications, such as airports, schools, office buildings, museums and wastewater treatment plants. Established in 1973, it is a world-leading manufacturer of gas-phase air-filtration systems that eliminate toxic, corrosive, odorous and hazardous gases. The company s systems prevent corrosion of electronics at oil refineries, pulp mills and chemical plants; improve air quality in schools, hospitals and office buildings; help preserve artifacts in museums, libraries and archives; monitor airborne molecular contamination in cleanrooms; and provide air quality for the municipal water and wastewater industries. Purafil maintains nearly 20,000 installations worldwide and is ISO 9001 certified.