Over the weekend, I bought 4 different types of cling wrap and decided to start up my experiment. I put 250mL of water into 5 take away containers and sealed it over with the different types of cling wrap, all cut into 30cmx30xm squares. I didn't put any plastic or covering over the last container because I wanted to use it as a comparison to all the other ones after the experiment.

I placed all the containers in a place where the room temperature was pretty constant, so it would be a pretty fair experiment. Today is my second day in waiting, and after a few more days I'm going to take the cling wrap off and see which container holds the least/most water.