Class I Cabinets offers protection for the user but no protection for the work. These Biological Safety Cabinets are Open front, Ventilated cabinet unit, with a working front aperture through which the user can carry out work inside the cabinet. It offers the operator protection based on the forced removal of hazardous substances from the working zone through the air up-flow, with HEPA filtration and its exhaust into the room or outside environment. This type of Biological Safety Cabinet is suitable for work with Bio Hazard Group 1 & 2 types of biological agent