The environmental test chamber artificially replicates conditions which materials or components might be exposed to. It is also used to accelerate the effects of exposure to the environment. Chamber testing involves exposing packaging materials to various environmental conditions in a controlled setting. Climatic Chamber testing is a broad term used to describe different ways of simulating climate or excessive ambient conditions exposure for a product or a material under laboratory controlled yet accelerated conditions. On the other hand, Thermal Shock testing is used to simulate how materials will react when exposed to changes in extreme climatic conditions, such as going from extremely cold to extremely hot conditions in a very short period of time (usually only few seconds).