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Ive heard of using a hand torch, not sure if propane or what works best, and softening the end of the ampoule so as to be able to narrow it. Once the end is narrowed, let it cool some and fill the ampoule. (narrowing the end first isn't necessary if the substance isn't volatile) After its filled you soften the end again with the torch and seal it. Using the heat to round off of the end.
Google should provide a more detailed description of each step. Im currently researching this to seal a sample of bromine, which is dangerous and volatile.
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∙ 12y ago
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