Air Science USA

Downflow Workstations
Operating at low noise levels, these workstations recirculate air without releasing expensive conditioned and/or heated air into the atmosphere. They have been specifically designed as small bench-mounted units with unrestricted access for operations that are difficult to perform under a conventional fume hood. To provide protection, the downward flow of air takes contamination away from the operator, and an alarm will sound when the airflow falls to an unacceptable level. The main filter can be chosen from 14 different types of carbon, which include specialty media for vapors or organics, solvents, acids, mercury and formaldehyde. HEPA filters for particulate filtration are also available

Purair 20 ductless fume hood
The Purair 20 ductless fume hood protects operators from hazardous substances, because all mechanisms in the head section of the unit are on the clean side of the filter, preventing contamination. Switches and electrical components are isolated from dirty airflow and kept away from contamination, and the work area has a removable spillage tray that can easily be cleaned. Filters can be chosen from 14 types of carbon, including specialty media suitable for organic, solvent, acid, mercury and formaldehyde vapors. The standard hood measures 49 in. wide by 27.5 in. deep by 47.5 in. high; other sizes up to 96-in. wide are available.