Controlled Environmental Testing Chambers are designed to provide optimal, realistic conditions such as temperature, humidity and lighting for research and testing purposes. These chambers are built for use in a variety of applications including plant growth, tissue culture storage, stability storage, freeze-thaw, blast freezing, photostability and arabidopsis. Controlled Environmental Testing Chambers feature a rugged construction with superior cabinet insulation, user friendly controls, heavy-duty refrigeration system and high performance electronic and mechanical systems as well as a number of optional features all of which enhance the quality, efficiency, durability and accessibility of these units.