ABSTRACT
Not all tests, nor all materials, are equally affected, and so the precise details of temperature and humidity will vary from test to test and from material to material. However, in every case, we can identify three phases during which the ambient atmosphere should be considered: storage, conditioning, and testing. Storage can be considered as that period of time between manufacture and the start of the process whereby the material is finally brought to the conditions required for the test. Conditioning is that phase during which the temperature and humidity are brought into line with the testing requirement. The testing phase is self-evidently that during which the actual test is performed.
