Malic Acid- Sold as sour by tpa. This is the sour note in old fashioned sour
balls candy as well as salt and vinegar crisps. I'm sure you get where this is
going regarding ejuice. It tends to form crystals on coils. WARNINGS: Like any
acid, this stuff eats kanthol, albeit slowly, and when used with nickel coils,
produces nickel compounds classified as class "A" carcinogens (sorry tc fans, and
no, I'm not showing any documentation, as it is simple chemistry: nickel+acid
+air=horrible, dangerous stuff; read a ....ing textbook)