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Temperature tests appear to be very simple and they are indeed, quite simple to execute, but the effects are oftentimes not observed and so it may seem that the test is not a critical one. However, when your product breaks spontaneously due to internal stresses while having passed a previous drop test, the cause will be traced to the flexible molecules; a new fail mode! Hence, please do not underestimate the temperature test and use it as a fail tracker.
Climatic testing is actually an extension of temperature testing. Therefore, those relevant failure mechanisms are applicable for climatic testing as well. High temperature combined with moisture gives you yet another extra fail mechanism: corrosion.
Humidity is a good transportation mechanism for temperature. The small water drops are warm due to the high temperature of the climate chamber and the warmth of the droplets will transfer directly to the components of your product. While a failure may originate from the effects of temperature, you might discover it in the humidity test and not in a temperature test!
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