EM Science expires their Bouins at 24 months.   After a bottle is open, it is up
to end-users to determine actual expiration based on decomposition,
environmental factors, and application.

In April's edition of Laboratory Medicine, I answered a Q&A question referring
to expiration of bulk chemicals which could apply to reagents also.  If you do
not have that edition, I would be happy to send you a copy.  I think you will
find it helpful.

Rande Kline, HT (ASCP)
Technical Services
EM Science




marilyn.johnson@agric.gov.ab.ca on 10/07/99 04:39:04 PM

To:   histonet@pathology.swmed.edu
cc:    (bcc: Rande Kline/EMI/Merck)
Subject:  Bouin's solution



Hi Histonetters,
Does anyone know if there is an expiry date for Bouin's solution?
 I am not aware of this solution reaching an end-point when it should be
discarded.
Thanks for any comments.

Marilyn Johnson
Animal Health Labs.
Edmonton, AB.  Canada