Anyone know of anything that will stain plastic instantaneously at contact? It's for a science fair project. I am trying to measure movement.
tea, turmeric powder, oil
Soaking it in hot water with a bit of bleach in it may do it. There is some stuff in the dishwashing detergent aisle at Wal Mart ... it's called plastic booster or something like that. I think you can put it in your dishwasher and it helps get that kind of stuff off. I've personally never spent the money to try it, so I don't know how well it works. I just usually wash the container and surrender myself to the fact that it's just going to be stained!
Krylon spray paint has a formula for spraying plastic. Make sure it is clean and dry without a slippery finish. Some plastics have a release agent on them. Paint will not stick. Clean first.
Just a guess---?---iodine
