This machine attempts to disambiguate purification and projection stations as well as possible. 5 dirty sulfate is made with purification, 4 clean sulfate is made with projection, and an expensive 'extras' arrangement makes 1 more dirty sulfate and 2 more clean sulfate with purification only. Wasteless stoichiometry seemed straightforward to me once I determined that copper could be created via one iron plus one of either iron or quicksilver, and thus every copper allowed for one "wildcard" in the calculation where all reagents are equivalent. Dirty sulfate requires 3 generic metal, and clean sulfate requires 2 generic metal. It may have been more convenient if there were a true backwards equivalence between iron and quicksilver, some way to eject liquid metal from copper, but this is surely too niche of an application to motivate any research on the matter. Machinery that can more natively select between purification and projection is likely to be superior, regardless.

I somehow ended up with Red Vitriol on the first attempt. Still trying to replicate that one.

 - Alchemist Kazyan, /u/StillNotABrick