Steve, I would still suggest trying the procedure I just posted to ISOGEOCHEM. It works quite well. I just finished another reactor in 30 minutes. It comes out clean and unbroken. How do you get so many injections per filling? Have you used a smaller particle size chromium? Also, don't suppose you've come up with anyway of reducing the chromium for reuse? Anthony Faiia Dept of Earth Science Dartmouth College Hanover, NH --- You wrote: We carefully cut them in half with a slowly rotating diamond saw, remove the spent Cr, clean them, and take them to a glassblower for repair. If you do several at a time, the cost for repair should be low. The repair is quite simple--the glass blower simply has to chuck them up in the lathe and re-join the two halves. They end up slightly shorter, but the high-temperature septa will still seal them. You can re-use a reactor 1-2 times this way, for a total life of 2000-3000 injections per reactor. --- end of quote ---