A NEW range of ductless fume hoods from Air Science USA, the Purair 5 range, exceed OSHA, ANSI and all relevant international standards says the company.
Available in three widths – 610, 915, and 1220mm (24, 36, and 48 inches), their ductless design eliminates installation costs and allows the unit to be positioned over a sink or benchtop apparatus.
Purair 5 units operate at low noise levels and because they recirculate, they do not exhaust expensive conditioned and/or heated air into the atmosphere.
A face velocity of 0.5m/s (100fpm) ensures containment of fumes and particulates, and an alarm alerts the operator when the airflow falls to an unacceptable level.
All mechanisms in the head section are on the ‘clean’ side of the filter, with the switches and electrical components being isolated from any contamination.
The main filter can be chosen from 14 different types of carbon, which include specialty media for vapors of organics, solvents, acids, mercury and formaldehyde. Hepa filters for particulate filtration are also available.
Typical applications for the Purair 5 include histology, powder weighing and sampling prep work.