fume hoods

From:Elizabeth Earle

OK, Histonet, next question. For years we have been using charcoal filter
fume hoods (the portable ones with the plexiglass or acrylic shrouds) in our
lab, with absolutely no problem.We have always been way below the limits on
our breathing zone testing. Now an engineer is telling me we will need
built-in hoods that exhaust to the outside. I just don't see that it's
necessary in a histology lab where most of the equipment now has fume
control built into the system. The only place we will really need it is in
the area where we change out our processor and stainer fluids. Anybody's
opinions would be appreciated.

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