"Roger Hull" skrev i en meddelelse
s.net...
I want to build a degreasing tank using Caustic Soda (aka Sodium Hydroxide
or
Lye) as the active agent. I am already aware of the necessary safety
precautions and EPA considerations. My questions a what material for
the
tank and how strong a solution? Thanks.


Regular or stainless steel should be fine..
I'd suggest a 2% solution.. Not strong enough to do any serious damage to
your skin on short term exposure, but strong enough to remove the worst
parts..

If you want it more effective you could heat the solution to 60-70 C..

/peter