I am new to this. I am trying fingers on computer boards. I think I started with too much AR initially, and now the gold won't drop because I'm having trouble getting rid of the excess nitric...I have Hokes book, and am using it as a guide but still having trouble. For one, the urea I got was in rose fertilizer. I didn't add water to it before adding it to the AR to increase pH. Is that ok? Like I said I don't think I got the nitric out cause the SMB isn't dropping the gold.
Also. After I get it evaporated out (hokes) can I use this other stuff I got instead of the SMB? It's called Stump remover. I assume that means stump out. And if so, do I add water to it before putting it in the AR solution?
Also trying another way that someone had on Internet. Took fingers. Added equal parts HCl and Hydrogen peroxide. Gold all came off easily. Do I now get that gold and put it in AR like I was just starting since the gold hasn't gone into solution yet? I do the same steps right?