I think you need to seach the APUG archives or similar.... http://www.apug.org/forums/forum37/19874-copper-sulfate-reversal-bleach.html There were great discussions on this some 10 years ago >________________________________ > From: Robert Hall <robert.g.hall@xxxxxxxxx> >To: "pure-silver@xxxxxxxxxxxxx" <pure-silver@xxxxxxxxxxxxx> >Sent: Thursday, March 14, 2013 3:39 PM >Subject: [pure-silver] Re: Copper bleach formula > > >Good start. What would one vary to get different results? > > >Is there a different copper compound that would work? > > >Anyone care to discuss what the chemical reaction is with this? > > >Thanks again. > > > >Robert Hall >www.RobertHall.com >www.RobertHall.com/workshops >www.facebook.com/robert.g.hall > > > > >On Thu, Mar 14, 2013 at 1:26 PM, titrisol <titrisol@xxxxxxxxx> wrote: > >From Tim Rudman's lith print book. >> >>Copper (Cupric) Sulfate..................................50 g Concentrated Sulfuric Acid (EXTREME CARE!)..............6.5 ml Sodium Chloride (Common Salt)........................... 50 g Water to make..........................................1000 ml >> >> >> >> >> >>>________________________________ >>> From: Robert Hall <robert.g.hall@xxxxxxxxx> >>>To: "pure-silver@xxxxxxxxxxxxx" <pure-silver@xxxxxxxxxxxxx> >>>Sent: Thursday, March 14, 2013 12:21 PM >>>Subject: [pure-silver] Copper bleach formula >>> >>> >>> >>>Alright bleach fans, I am looking for a better understanding of how copper >>>works in a bleach. >>> >>> >>>I would like a few different formulas if anyone is willing to share. >>> >>> >>>Anyone have any tidbits of knowledge they would like to share? >>> >>> >>>Thank you, >>> >>> >>>Robert Hall >>>www.RobertHall.com >>>www.RobertHall.com/workshops >>>www.facebook.com/robert.g.hall >>> >>> >>> >>> > > >