On Dec 13, 7:14*pm, "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

Citric acid is used in cooking/baking. The local supermarket in
Washington State had citric acid in the bulk food department. But you
will probably only find it in a really large supermarket.

Check Ernie Leimkuhler's website or search in SEJW. Ernie uses a
citric acid sold for passivation.

Dan