Air Science USA presents the Purair 10 Ductless Fume Hood. This new product features high operator protection to fume and particle hazards and easy to change filters. Improved clamping eliminates bypass leakage. The hood also has a low airflow alarm and optional back-up safety filter. Typical applications include weighing, chemical sampling, histology, forensic and pharmaceutical. These units are energy saving. Clean air is recirculated into the laboratory, therefore, they do not exhaust expensive conditioned and/or heated air into the atmosphere.