Edward Saiff esaiff at
Wed Jun 28 09:16:09 EST 1995

Does anyone have experience using protargol (silver protein)?  I have 
been using it for about two years with excellent results.  The question I 
have has to do with how many times you can use the solutions involved 
before they loose their effectiveness.  Is there a way to test the 
protargol solution to see if it is usable without going through the 
process of staining some slides?

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