What are the GLP requirements for labeling of reagents purchased directly from manufacturers?

All reagents used in a nonclinical laboratory have to be labeled to indicate identity, titer or concentration, storage requirements, and expiration date. Purchased reagents usually carry all these items except for the expiration date, so the laboratory should label the reagent
containers with an expiration date. The expiration date selected should be in line with laboratory experience and need not require specific stability testing.