Nitric Acid Concentration

[Anonymous]

Being totally new to gold refining I was wondering what percentage of Nitric people are using? I have 62% is it ok to use? or should I dilute it? I've done 2 runs with the Poor mans AR which has worked very well thanks to Lasersteve and Harold and Noxx!!!!! came out with a 34 gram nugget which I'm going to refine again because there is a little reddish brown on the top of it.

Thank ya'll!!!!!!

Brian

 

[butcher]

for dissolving base metals I usually dilute to about 30% or about half volume water , for aqua regia I would use full strength. depending on process.