Hi Steinar, this sounds like a neat test.
Have you reviewed this process & testing results on nails and salt spray?
http://www.thegunzone.com/rust.html
You may get some ideas about process from that information.
I don't know if the results were debated or challenged in his testing.
I purchased some eezox, and primarily use CLP after reading that a few years back.
I also contacted
mtuite@corrosionx.com a while back, he sent a small free tube of corrosionX - don't know if he would ship to Norway or not. It might be worth an email to see.
Regards,
Fritz.