PHB Page 119, Wizard, School of Transmutation, Minor Alchemy: For each 10 minutes you spend performing the procedure, you can transform up to 1 cubic foot of material. After 1 hour, or until you ...
I am currently reading through all the rules used for the Alchemy skill. It says (I quote from GURPS Magic, p. 210): It is a mechanical process, using the mana inherent in certain things. [...] ...