Gassing will give you salted alkaloids of a higher purity then if you were to an aqueous extract and/or evaporate.
It is however, definitely a good idea to do an aqueous extract to get the goodies that did not precipitate with the gassing.
Gassing is fairly simple. Just take the proper precautions, HCl gas can be nasty for your lungs eyes, and any iron in the vicinity. (it will rust, ive even seen stainless steel rust) Keep a few things in mind; You should dry your NP solvent and dry your HCl gas. This will make your gassing extremely efficient.
Don't worry though, even if your solvent or gas isnt dry, you can always collect the rest with aqueous extract.
Expect nothing, Receive everything.
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