What is the solution you are talkin about?
Schwerters salts silver test solution?
in this case the answer would be No.
http://www.google.com/#sclient=psy-ab&hl=en&tbo=d&site=&source=hp&q=Schwerters+salts+silver+test+solution&rlz=1W1RNQN_enUS457&oq=Schwerters+salts+silver+test+solution&gs_l=hp.12...4156094.4156094.0.4160734.1.1.0.0.0.0.406.406.4-1.1.0.les%3B..0.0...1c.uDUZwYJXdmw&pbx=1&bav=on.2,or.r_gc.r_pw.&bvm=bv.1355534169,d.cGE&fp=91bc34ef97bcb3b6&bpcl=40096503&biw=1024&bih=539
If just nitric acid then it can be used.
Not all test solutions used to test silver are the same chemical, so unless we know what you have we really cannot give you a good answer to this question.
