You could do something like
Companies add ozone to water before bottling. I think water low in minerals absorbs plastic from containers. Water with ozone absorbs more plastic than water low in minerals.
Some people have ozonators. You could store rain water in a glass container. Weigh the water.
Add ozone to the water and move it to a plastic container. Let it react. Weigh the water.
“I think water low in minerals absorbs plastic from containers.”
By what mechanism?
“Water with ozone absorbs more plastic than water low in minerals.”
Again, by what mechanism? Please supply a scientific theory that supports that claim.