Science at its best, thats how to clean coins with cilit bang.
I also advise you, from very painful personal experience, dont get the powder version into you eyes. The feeling is akin to being flicked on a gonad, no pain for a little while then all hell rains down on you. Its fcuking horrid stuff.
DD you seem to know just a bit too much on this subject - could I interest you in joining the http://www.environmental-cleaners.com/. Its a pukka gen Livery company where you can get into some real deep meaningful discussions on all types of cleaning products.
I wonder if this stuff is anygood on medals? - the subject of an earlier post.