There's a list:
http://www.e-cigarette-forum.com/fo...-crack-tanks-ce2s-clearos-17.html#post6105173
But it's not always accurate (for example I haven't had a problem with Ectoplasm in my Clearos but it's on the list)
So I bought a sheet of Polycarbonite from Lowes (An 8" X 10" sheet was about $5). I first smeared it with a Cinnamon essential oil (got at Walmart for a few bucks) to ensure it reacts as Cinnamon (or more specifically, cinnamaldehyde) is
very reactive to Polycarbonite. Some Polycarbonite is coated with something that isn't reactive so testing it to fail first is essential before you rely on it.
I smear a bit of any new juice/flavoring I get on it and let it sit for a few days to see if there's any clouding, cracking or melting.
I also do the same with a piece of polystyrene (Styrofoam). Stryofoam reacts much quicker to some of the same things that will eventually break down Polycarbonite so it's an added layer of safety.
Lastly, if my first two tests seem ok, I have a dead Clearo that I kept and test my juice/flavorings on that just to make
absolutely sure the juice is safe. I smear some juice on the tank and the mouthpiece and let them sit overnight.
Don't know.
There's a number of different classes of chemical that attack PC (aldehydes, ketones, carboxylic acids, esters, amides, acyl chlorides, acid anhydrides, etc). Most are harmless to people and found naturally in many of our healthiest foods. They just don't like Polycarbonite.
And it's not all banana. Regular banana from TPA works fine. But TPA's "
Ripe Banana" (or at least the bottle I have) has something in it that Polycarbonite doesn't like and it eats right through it.