This economical DWS Downflow Workstation is specifically designed as a small bench mounted unit with unrestricted access for those operations that are difficult to perform using a conventional fume hood. For added protection, the downflow action forces the contaminated air away from the operator with an automated alarm alert when airflow falls to an unacceptable level. The stainless steel tray is removable for easy cleaning and provides access to the pre-filter. A convenient spill tray is located below the work surface. Integral lighting gives good illumination of the desired area. All mechanisms in the head section are located on the clean side of the filter, with the switches and electrical components 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 to suit most any application. This DWS Downflow Workstation exceeds OSHA, ANSI and all relevant international standards. This unit comes with a pre-filter.