Screenman,
Just to get a rise ....
Atoms, the basis of all life, substance, compounds, etc... are in constant, rapid and violent motion.
Check with any physics professor and they will tell you that, given time, even a bar of lead, placed directly next to a bar of gold, will eventually fuse together.
Of course, the laws of physics have proven that gasses and liquids can/do "intermingle" with eachother more rapidly as they are inherrently permeable.
I would suggest, that a true test of water to resin interaction, could not be accurate to the naked eye as both liquids are opaque/clear to begin with.
Try adapting the "Drop of Ink in Glass of Water Test," instead, if you want to assert results based only upon registration of the human eye. Mix your drop of water with some sort of organic coloring, then place a drop of this mixture into several drops of your repair resin and monitor/see how long it takes for the resin and colored water to blissfully wed
!
Sorry, had to say it and "prove" to my folks that all of that money that they spent on my education would eventually be useful
!!!!!