Choosing what type of Primary Engineering Controls or Ventilated Enclosure is right for your lab can sometimes be confusing. Volatile chemicals, while typically used in a fume hood, may sometimes be used in conjunction with biological experiments in a biosafety cabinet (BSC). We have analytically and empirically derived a series of equations to calculate the ultimate internal concentration, maximum amount allowed safely, and the time required for the evacuation of any volatile chemical in a recirculating Class II Type A2 BSC. Review our webinar and white paper to assist in your risk assessment to determine which BSC may be appropriate for your work.