I finally remembered to look at those little paper cups we use, and guess what, they are EZMIX
, as linked above by MARTINSR, but they are the #70004. We buy them by the sleeve, and they do not have any wax on them, but rather some kind of thin shiny coating on the inside, probably plastic. I do not often use the graduations, preferring instead to slap them on the scale and weigh the material. The lines on the cups work though, especially if you put a light source behind the cup to see them better.