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. >Don't know if anyone else has found another way to clean out the Finnigan H- >Device reactors yet. Although not very elegant, the following physical >procedure works. -- ******************************** Steve Nelson Dept. of Geology S389 ESC Brigham Young University Provo. Utah 84602 voice: 1-801-422-8688 lab: 1-801-422-5124 FAX: 1-801-422-0267 CARPE CARP: seize the fish ********************************