The Air Filtration Device (AFD) Standards Development Committee of the Indoor Environmental Standards Organization (IESO) is continuing its research with a three-day testing program of HEPA-filtered negative air type or collection machines.

The purpose of the event, which is scheduled to be held March 15-17 by Alliance Disaster Kleenup in Wheeling, IL, is to gather information to develop an ANSI/IESO Standard for the field evaluation of portable HEPA-equipped air filtration devices.