Laboratory fume hoods are designed for containment of hazardous reagents used in laboratory experiments, or toxic fumes that result from reactions or experiments. Primary goal of the hood is to protect the user from these reagents, and to protect other laboratory staff, animals and/or experiments from contamination. The fume hood pulls air away from the user and filtered or released to the external environment. Fume hoods come in various sizes and shapes, the exact type that suit your need can be decided according to the application. When choosing an appropriate hood for your lab, consider special application requirements, energy consumption, available space and types of filters needed.