On Aug 5, 3:08*pm, Richard J Kinch wrote:
Grant Erwin writes:
So what's Evapo-Rust, and why would I want it?

Suspected to be a few cents worth of EDTA in water for $20/gallon. *The
bottler won't be honest about what it is. *The publish an MSDS that sez
nothing is in it that is hazardous. *This in a world where water is
hazardous for MSDS purposes.

It's one of those things that 3M doesn't think is worth selling, but is
effectively hustled by a small outfit. *Such as via newsgroup spam and
inflated "military" testimonials.

Really, what kind of technician relies on a product that has no scientific
basis, precisely because the maker won't tell you what's in it?

Here's some info on the general idea:
http://www.patentstorm.us/patents/54...scription.html
I use Zep Metal Prep Dip Rust Remover. I have no idea what's in it but
I'm trying to find out.
Karl