Robert N. Nelson and John DeLaHunt gave good descriptions of the process.  From my reading of their posts and the LA Times article - I think the Emperior's new clothes are very nice.   It sounds too much like a flim-flam stunt -- I could be wrong.   As my old chemistry teach said, "Water - is the Universal Solvent."   Barry Weissman --- This e-mail is from the [log in to unmask] list. Archives of list discussions can be found at http://list.uvm.edu/archives/safety.html For help with the list, contact Ralph Stuart at [log in to unmask]