"The volume of liquid waste can be reduced greatly by precipitating the
mercury and separating it from the liquid by decantation or filtration. To
precipitate mercury, raise th pH to 8.0 or higher with sodium carbonate or
sodium hydroxide (the latter is more dangerous to handle). Discard the
fluid down the drain if other ingredients permit; collect the precipitate
(cabonate and/or hydroxides of mercury) for disposal by a licensed firm.
Never discard mercuric salts (solids or in solution) down the drain."

Dapson & Dapson: Hazardous Materials in the Histopathology Laboratory,
Third Edition, Anatech Ltd, 1995.



Eric C. Kellar
University of Pittsburgh Medical Center

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Good Morning,

I sent this message earlier this morning, but I don't have a clue where it
went so if it shows up in someones email, sorry.  But anyway, I have a
question.  Is there anyway of neutrilizing/reducing mercury fixatives (B5
specifically), so that it can be disposed of down the drain?  I know this
has been discussed before, but because I need the information I can not find
it anywhere.

thanks for your help,
linda
bixby medical center
adrian,mi