On Sun, 13 Dec 2009 13:14:59 -0600, "Karl Townsend"
wrote:

I need some nitric acid to passivate some stainless. Anybody know of a
common local source? I see my favorite McMaster Carr don't have it.

For example, you cab buy hydrochloric acid as muratic acid at any hardware
store. or phosphoric acid as "Lime Away" at any farm and fleet store or
sulfuric acid as battery acid at any auto parts store.

I see citric acid is also use to passivate. Know a local source for this?

Karl

It's available in the Twin Cities but I don't know where. Mary's Dad's
business in St. Paul did stainless passivation. I still have a
gallon jug of fuming HNO3 but I'm not sharing!