In reviewing our procedures, we recently came across a
warning in the latest Freida Carson book regarding the
potential explosivity of ammoniacal silver, as is used
in Gomori's Reticulin staining.  We have in the past
reused the ammoniacal silver solution for up to one
week, refrigerating it between uses.

What are the protocols for dealing with this
substance?  Are you reusing the ammoniacal silver, or
preparing it fresh each time?  How are you disposing
the waste?  Should we be treating the solution by
precipitating out the silver prior to disposal?  Does
anyone have a procedure for this?

Thanks in advance.

Kelly Booher, BS, HTL (ASCP)
Anatomic Pathology
Swedish Medical Center, Providence Campus
Seattle, WA  98122

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