disposal of MMA
There are several ways to dispose of the MMA waste
and it also may depend on the rules established by your facility.
1) the 2nd infiltrating solution can be
filtered and used to make prepolymerized layers. That way the solution is
recycled and it reduces your waste.
2) if you can dispose of the waste as a solid, go
ahead and polymerize the waste and dispose of it as required by your
3) if you must dispose of the solution as a liquid,
stir in hydroquinone (about a teaspoon per 100 ml) and collect the waste in 5
gallon metal cans. Again this must be confirmed by the safety officer
at your facility. Hydroquinone can be purchased from Aldrich. Handle
with caution, as hydroquinone is a carcinogen!!
I now operate my own private contract
histology lab and live and operate the lab "in the country". We
make prepolymerized layers to replace the ones used for embedded
specimens. We also place as much as 600 ml in polypropylene
containers that have a snap top lid and then we place them
outside. Within a couple of hours depending on the outside
temperature, the solution usually polymerizes. You could polymerize in the
lab but keep in mind that the larger the volume the greater the potential for a
Hope this helps,
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