Table 3.

Test conditions in climatic chamber.

Step	Atmosphere	Temperature	Duration
1	Humid	60 °C	4 h
2	dry	35 °C	1 h
3	Humid	60 °C	4 h
4	dry	35 °C	1 h
5	Humid	60 °C	6 h
6	dry	35 °C	2 h
7	Humid	60 °C	3 h
8	dry	55 °C	3 h