Maximos Critelli was a genius from the beginning. To this day, even his dirty blue vitrol--Indigo Vitriol, by some books--finds uses as a fire purification agent.

This machine attempts to disambiguate purification and projection stations. 5 dirty vitriol is made with purification, 4 clean vitriol 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 vitriol requires 3 generic metal, and clean vitriol requires 2 generic metal. It may have been more convenient if there were a true backwards equivalence between iron and quicksilver, i.e. some way to recover liquid metal from copper, but this is a matter for another alchemist. Machinery that can more natively select between purification and projection is likely to be superior than this design, regardless, but with four pipelines, I'm curious what spell the top alchemists wove.

 - Alchemist Kazyan, /u/StillNotABrick