Alchemy companion is an excellent book to have as a reference guide into Alchemy. It doesn't matter if you are playing D&D, Rolemaster, Pathfinder, or Gurps, The information in this source book will help you out.
Woo Hoo, Chartmaster! One of my favorite games I've literally never played! Seriously, nice to see someone talking about OG Rolemaster - crunchy as hell, but it had massive amounts of ideas and world building concepts to plunder.