Hi Jean,

 

I wonder if your problems are due to the increased air flow around the
machine from the fume hood - the dehydrant evaporation would certainly
suggest this. Our machine is not kept in a fume hood, but the "head" is
loaded up with vials in one and then transferred to the processor. The
osmium vial is kept capped until ready to go - it is then uncapped and the
lid is closed immediately. The exhaust tube runs into the fume cabinet to
suck away any fumes and the vials are "capped" by the closed lid of the
processor. It is really only when each vial is moved to the specimen holder
or "retort" area that you would get evaporation - the seal around the top
isn't great and it would seem that your fume hood is sucking away your
dehydrants.


Andrew Kennedy

Senior Science Officer

Anatomical Pathology

Concord Repatriation General Hospital

Hospital Road
Concord NSW 2139

 

ph: +612 9767 6115

Fax +612 9767 8427

 

"corpora non agunt nisi fixata"

 

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