"Marlene F. LEFEBVRE" wrote:

> Dear Friends. We are attempting to become GLP compliant, and was wondering
> how others handled expiry dates on the dry powder biological stains which
> in most part are very stable.  Help would be appreciated. Thanks Marlene

Dry powder should be labelled with a 10 year expiration date (even though the
stuff should be good forever, the FDA wants to see an expiration date).
Write date received, date opened, tech initials and expiration date on each
container.

Kim Merriam
TKT
Cambridge, MA