The question of how to remove the oxide discoloration resulting from welding stainless comes up from time to time. Praxair has a new solution, said to be safe.
I don't know anything about it but there is a brief mention in our new magazine, _Welding Productivity_.
You're seeing that issue before the rest of the world will see it. It probably will go live tomorrow. It's still undergoing some editing.
Anyway, if you're interested, call Praxair.