If sealed in their original package (not exposed to air), they probably are.
  On the other hand, it will be always cheaper to prepare a hematoxylin solution to determine how it works, than to buy a new powder bottle.
  René J.

Mylène de Champlain  wrote:
  
Hi,

I would like to know if those histological products still good even if they are expired. They still sealed in the original package. 

Products Expiration
Consul-mount histology formulation 09-2007
Shandon xylene-substitute mountant 01-2007
Instant hematoxylin (powder) 09-2003

Thank you for your answers.

Mylène 
Université du Québec à Rimouski
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