The bleach will then bleach the negative back to silver chloride using hydrochloric acid.
Originally Posted by SMBooth
Anpros has Sulphuric Acid for sale you can use, you can also use sodium bisulphate, assuming there's no contamination of other chemicals like chlorides etc, one I bought off eBay must have had some chloride in it, as it only partially removed the negative, and the rest was bleached back but remained on the film.
I can dilute you a few mLs of concentrated sulphuric acid (as you need very little conc for it) in some water since you're in Melbourne.
Otherwise I got mine from http://anpros.com.au/