scope:

This test is to determine the effects of long term operation of components in atmospheres containing industrial gaseous pollutants. It consists of exposure to a flowing-gas humid atmosphere containing SOz, HzS and HO2 in concentrations of 200 parts per billion. This corresponds to a worst-case polluted atmosphere, and is an accelerated exposure to normal, average pollutantlevel atmosphere. An acceleration factor of 30-40 is associated with this test.  To further simulate and accelerate conditions obtained in operating environments, the test also involves temperature and humidity cycling so as to muse breathing and moisture condensation on the test samples.