Ozone Resistance

Many materials, especially plastics, are capable of reacting directly with ozone or are attacked by the highly reactive gas. This can lead to brittleness, cracking, and ultimately to material failure.
In addition to the materials themselves, coatings are also affected. Ozone resistance testing is carried out under controlled conditions and can be performed in the gas phase as well as in aqueous ozone solutions.

Both aqueous ozone solutions and ozone-containing gases have a very strong oxidative effect, so that such a test can also be seen as a general enhanced resistance test against oxidants.
It is also possible to carry out a test in both types of media simultaneously, which allows the influence or resistance at the phase boundary to be investigated. During the test, half of the coated sample plates are therefore stored in the liquid phase and half in the gas phase.
The phenomena at the phase boundary are of particular interest, as this is where the oxidative attack is most intense.