How to clean brass after soldering. (Soak in 3% hydrogen peroxide and sodium bisulfate) Should be relevant for any kind of torch heating of brass or bronze. I gave up using bronze (specifically nu-gold) for fold forming because it was more expensive than copper, harder to work with, BUT ends up looking just like copper after annealing. So why bother? I hope this solves that problem.
New research shows that sodium bisulfate may help control salmonella contamination on the surface of extruded dry pet food. http://healthypets.mercola.com/sites/healthypets/archive/2013/06/28/sodium-bisulfate.aspx