If you have a source - get the powder, However..... When I was new to the game, I did fina conversions - syno conversions, I thought that it was very good practice, and ALOT cheaper (and safer) than getting *Lord only knows what* from a guy at the gym who knows a guy.......
You go for it.
Now, yes you can leave your syno in heet for a couple of days - leave the lid on - otherwise all of the methyl alcohol (heet is pure MA) will evaporate away and you will have to dump in another bottle to continue your experiment.
