> I've done some sealing of volatile liquids (elemental Bromine) in pyrex a=
mpoules and I found it very challenging to get a technique down.

I would imagine that the issues with sealing evacuated glassware are somewh=
at different than sealing an ampoule with contents at or above 1Atm.  In th=
e vacuum case, you have atmospheric pressure on your side=85

BillW


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