One thing I can tell you about Nitrogen, as an inert gas, when i braze copper pipe in the field for refrigeration, the gas neutralizes the oxygen to prevent the black scale debris that will cause the system to burn out if left unchecked
[Non-text portions of this message have been removed] Received on Thu Aug 26 12:48:00 2004
This archive was generated by hypermail 2.1.8 : Mon Oct 27 2008 - 20:24:04 EDT