|From:||ANATECH LTD <firstname.lastname@example.org>|
Iodine in alcohol or xylene is reputed to remove mercury deposits,
but as Peggy Wenk has pointed out, it creates an interesting disposal
problem. Your hazardous waste hauler must be informed that mercury
is present. They can then advise you if it is feasible to use such a
Keep this in mind, whether you use a water-based or solvent-based
system to remove mercury deposits: that solution plus at least the
next one will contain mercury. Waste with as little as 1 part per
billion is prohibited from going down the drain in the US. In the
EPA Region I (New England), there is a mandate to virtually eliminate
ANY mercury from wastewater by 2005. Current technology allows
detection down to 0.1 ppb, so that will be the new level by 2005 if
finer detection limits are not available by then.
This points up the futility of using any mercury-containing fixative.
You cannot operate your lab and be in compliance with US
Zinc does not leave a pigmented deposit and thus does not need a
de-Zenkerization step in staining.
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