... 2002 2European Standard EN12469:2000 3Chinese Standard YY0569 Class II Biological Safety Cabinet Biological safety cabinets are used ... safety cabinets: Class I, Class II, Class III. II. Class II Biosafety CabinetClass II: The Class II biological safety cabinet is an open ... -front, ventilated cabinet. The Class II biological safety cabinet will provide personnel, environment and product ...