paraformaldehyde fix

Stan A. Baldwin see at in.text
Wed Sep 24 14:57:26 EST 1997

I've had several people tell me that paraformaldehyde made in solution
is no good after a couple of days.  I've used month old paraformaldehyde
from the frig and it fixes tissue just fine for immunocytochemistry and
general histology.  Does anyone know if there is some chemistry reason
why para would "go bad" after a couple of days in the frig.

Thanks for any help.

sbaldwin at

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