I understand the paper is directed mostly to museums etc, but even then wouldn`t it make sense to make similar test for "comercial" products destined to be used in a less controlled environment?
So far this is the first paper I have seen that addresses the pollution issue. I think if the test had included the same test with a higher RH the results would have been much worse. After all, water is a wonderful medium for chemical reactions...
In any case I think Wilhelm and RIT have something to learn from this people.