Hello fellow Histonetters,

A question has arisen in our Histo lab as to what methods are being used to
disinfect cryostats.
In the past I have used formalin in a small container put in the cryostat,
during the defrost cycle at night the formalin will thaw and the vapors act
to disinfect.  Where did this originate? And what other methods are being
used?  Inquiring minds want to know.  Any information is greatly
appreciated.  Thanks !