John I think perhaps you should re-read the bit about BCl3 without the rose-tinted specs on. Andy On Jul 8 2010, John Montoya wrote: >So, other than standard machine maintenance, such as >replacing filters, using oil pumps, and storing the >required gases safely, there is no hazardous safety >concern associated with SF6 and BCl3? Sorry, I just want >to make sure I have everything clear... Any trouble >associated with disposing the SF6 and BCl3 gas once used?