SIN: 581 1THIS SIN INCLUDES TYPE A, TYPE A/B3, AND TYPE B1 BIOLOGICAL HAZARD SAFETY CABINETS. THE CABINETS REMOVE AND CONTAIN BIOLOGICALLY HAZARDOUS VAPORS AND PARTICLESFROM THE CABINET WORK SURFACE. BIOLOGICAL HAZARD SAFETY CABINETS USE UNIFORM BLOWER POWERED AIRFLOW THROUGH HIGH EFFICIENCY AIR (HEPA) FILTERS TO TRAP DISEASE CAUSING SPILLS, AIRBORNE MICROORGANISMS AND PARTICULATE WHICH ARE HARMFUL TO PERSONNEL. THE CABINETS PREVENT EXPOSURE TO THE SPILLS AND AIRBORNE DISBURSALS THATARE RELEASED WHEN LABORATORY PERSONNEL WORK ON HAZARDOUS AGENTS CONTAINED WITHIN THE LABORATORY WORKSPACE. TYPE A CABINETS EXHAUST HEPA FILTERED AIR BACK INTO THE LABORATORY WHEN THE CABINET IS NOT CONNECTED TO THE BUILDING AIR EXHAUST SYSTEM. TYPE A/ B3 CABINETS CAN BE CONVERTED TO CONNECT THE HEPA FILTERED AIR TO THE BUILDING AIR EXHAUST SYSTEM. TYPE B2 CABINETS CONNECT THE HEPA FILTERED AIR TOTHE BUILDING EXHAUST SYSTEM. TYPE B1 CABINETS RE-CIRCULATE HEPA FILTERED AIR INTO THE CABINET WORK SPACE. INCLU