Class II Biosafety Cabinet NBSC-100 is a safety containment cabinet with type A2 safety level and HEPA filters that recirculates 70% filtered air within the cabinet and discharges 30% of filtered air into the outer environment with the help of HEPA exhaust filter. As a result, it limits the operator's exposure to even minute quantities of volatile toxic or hazardous chemicals and radio nucleotide by negative pressure inward airflow. It thereby helps provides suitable work environment to the user and the product against pathogens and potentially hazardous microbial agents or materials.