Safety and Ergonomics! No two factors are more important in the laboratory environment. Kewaunee understands this and has earned the trust of our customers for more than 100 years, building products specifically for the laboratory with these two principles in mind. The Interceptor Class II, A2 Biological Safety Cabinet is Kewaunee’s latest design. Developed with comprehensive features created to enhance both safety and ergonomics…the Interceptor leads it’s class.