[nj_bartel]

This was a project I was undertaking, but after a few "dry runs" of practicing the ampoule sealing with water instead of chlorine, I'm realizing that this is beyond my skill level and there's a fairly good chance I'd end up shooting myself in the face with a pretty high concentration of gaseous chlorine.

I've looked online, but have only been able to find a private copy of what I was planning.  Do any of you know someone who might sell/make these?

[skyjumper]

Try making your ampule out of a longer test tube, more space between where you are working and the actual product. I would be concerned about the pressure needed to liquefy at room temp. probably breaking glass... 

[nj_bartel]

Chlorine is "easily" condensed with dry ice.  I'll try giving that a shot.  It's hard to work with the flame too near the fingertips though!

[vmelkon]

I hope your ampule has a small diameter with relatively thick walls.

[nj_bartel]

Found someone who sold me a quartz ampoule with burst pressure ca 100 atm; encased it myself