Profile: Air Science® manufactures a complete series of high efficiency ductless fume hoods, ductless workstations, laboratory filtration products, and custom enclosures designed to protect the user, the process and the environment from hazardous vapors, fumes, and particulates. Our products and manufacturing processes are designed to minimize environmental impact. Purair® basic ductless fume hoods are designed to provide high level performance features at an affordable price. Basic ductless hoods are found in research laboratories, educational facilities, and forensic laboratories throughout the world and are designed to protect the user and the environment from hazardous vapors generated on the work surface.