[Lynn Eades]

Rob, Muriatic acid (I believe) is a certain strength of phosphoric acid. Btw, It is found in some of your food.
Aside from the H&S, be careful using it, as some non ferrous metals will soon disappear and high carbon steels won't like it either. I have had some inhibitors put in it and I use it to clean out engine blocks, heads etc. The inhibitors stop it from attacking the good metal. Im talking cast iron here.
Probably you know all of this, but I post it for those that don't.
A very useful acid.
Chris, when I was an apprentice (Army) the recon shop had a trich bath. It was a wonderful thing. It did what the acid does in seconds. I never new 'til years later how dangerous it was. I remember topping it up from a 210l. drum.
The one thing you left off your list was antifreeze (although you did mention family pets)