Good news and bad news. The good news is that I start to like the idea more and more. The bad news is that the tests will probably not be preformed with a C6602A cartridge.
It is not fibre reinforced PA, but it is 15% glassfiber reinforced PET. This gave me hope, but when I looked up the datasheet for PET, it showed poor resistance to Acetone. PET datasheet
The CN642 has no material identifier, so I do not know what that one is made of. I will see what else I can find, perhaps I will try and see what acetone does to a C6602A for real in stead of just reading the theory.