Delta, I've got a GC machine at work, although I don't think they'd like me using it with weed ;-) But, I have been interested to figure out what's in Dutchmaster Reverse, so we can better understand how it works. Would you be able to run an analysis on it? (I'm more of a mechanical/civil engineering background, although I do chemistry and biology when necessary) I'm guessing it's some sorta hormone, but I really don't know.