Eliminating Mercury

[Oxygen]

If one vacuum distills an impure freebase that may contain small amounts of mercury in the form of almagams and/or salts, could some mercury make its way into the distillate?

[hypo]

there (practically) isn't any mercury, because
a) it was reduced to the metal and thus was never in your organic phase
b) you conscientiously washed your organic phase.

[politoxicomania]

U can try it yourself.
A good test is to precipitate Hg as HgS wich is L=1*10E-47.
If u cant see a precipitate u can be sure that no Hg is present.
:-)

[Wargasm]

As long as you perform the extractions and washes as per the write up and distill your FB, there won't be any mercury.