Before choosing the packaging material (metal), we should know about the compatibility of the product with packaging material.
Some companies choose the path of their competitors, and some go by with trial and error.
So, this is not the correct method for proceeding and also does not have the accurate test method (ISO/ASTM/BIS).
There are two ways to do the compatibility study.
1. The simplest way is to pack the product in the actual packaging with the required storage condition & find the reading.
2. The second one is also an easier one, is to cut the metal strip with the coating(epoxy/phenolic whatever the requirement) needed on that. That different types of cut strip dip into the product on the specified condition and find the result.