[Histonet] Expiration Dates on Reagents

Jennifer MacDonald JMacDonald <@t> mtsac.edu
Wed Apr 18 19:56:36 CDT 2007


When we have received dry chemicals without the expiration date, I called 
the company to ask.  Hydroquinone is an example.  The bottle was received 
new with no expiration date.  I called the company and was told that once 
it was opened it was only stable for 1 year.  Once reagents have been 
diluted the expiration date is shortened.  The more dilute the reagent the 
shorter the expiration date for that reagent.  Frieda Carson's book has a 
chart for expiration dates for prepared reagents, as does the staining 
manual of Charles Churukian.
Jennifer


Jennifer MacDonald
Director, Histotechnician Training Program
Mt. San Antonio College
1100 N. Grand Ave.
Walnut, CA 91789
(909) 594-5611 ext. 4884
jmacdonald <@t> mtsac.edu



"Norton, Sally" <sally.norton <@t> seattlechildrens.org> 
Sent by: histonet-bounces <@t> lists.utsouthwestern.edu
04/18/2007 11:06 AM

To
histonet <@t> lists.utsouthwestern.edu
cc

Subject
[Histonet] Expiration Dates on Reagents






 

            Hello all,

 

            Does anyone know of a list expiration dates for dry
chemicals and reagents for histology?

 

            Thank you,

 

            Sally Norton

            Histology

            Children's Hospital and Regional Medical Center

 

 


CONFIDENTIALITY NOTICE:  This e-mail message, including any attachments, 
is for the sole use of the intended recipient(s) and may contain 
confidential and privileged information protected by law.  Any 
unauthorized review, use, disclosure or distribution is prohibited.  If 
you are not the intended recipient, please contact the sender by reply 
e-mail and destroy all copies of the original message.
_______________________________________________
Histonet mailing list
Histonet <@t> lists.utsouthwestern.edu
http://lists.utsouthwestern.edu/mailman/listinfo/histonet



More information about the Histonet mailing list