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Posted 09/28/2018 10:30 am
It isn't that expensive. The Science Company sell 100 grams or crystal for $13. That's enough to make 1000 ml of a 10% solution. Now if you price the ready made solution that is considerably more. 125 ml of 10% solution is $24. So you can make 1000 ml for about $13, to buy that much ready made would cost over $200.
Carolina biological has 100 g for $9.70.
One word of warning though, using it on silver will form silver nitrate which can turn black on exposure to light. so any treated coins may turn black as well. You might be able to avoid that though by treating the coins in darkroom conditions and thoroughly rinsing the coins before exposure to light for examination.
Carolina biological has 100 g for $9.70.
One word of warning though, using it on silver will form silver nitrate which can turn black on exposure to light. so any treated coins may turn black as well. You might be able to avoid that though by treating the coins in darkroom conditions and thoroughly rinsing the coins before exposure to light for examination.
Edited by Conder101
09/28/2018 10:36 am
09/28/2018 10:36 am
