Purair 5 Ductless Fume Hoods from Air Science USA feature a high level of operator protection where routine work is being carried out. The units reportedly exceed OSHA, ANSI and all relevant international standards.
The ductless design eliminates installation costs, according to the company, and allows the unit to be positioned over a sink or bench top apparatus. An optional polypropylene spillage tray can be provided when required. The rear of the unit has lighting to illuminate the work surface. Three models are available with a choice of 24", 36" or 48" widths. The units operate at low noise levels and because they recirculate, they reportedly do not exhaust conditioned and/or heated air into the atmosphere. A face velocity of 100 fpm ensures containment of fumes and particulates for operator protection. 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 isolated from any contamination. The filter clamping mechanism allows the filter to be easily installed and ensures an even seal at the filter face at all times to prevent bypass leakage, according to Air Science.
The main filter is available in 14 different types of carbon, which includes specialty media for vapors of organics, solvents, acids, mercury and formaldehyde. HEPA filters for particulate filtration are also available to suit your application needs.Typical applications for the Purair 5 include histology, powder weighing and sampling prep work.
