Hach reagent packaging and certificate of analysis (COA) have different shelf life format, which is correct?

Document ID

Document ID TE1475

Published Date

Published Date 27/05/2017
Question
Hach reagent packaging and certificate of analysis (COA) have different shelf life format, which is correct?
Summary
Use the expiration date on the package or the COA
Answer
Use the expiration date on the package or the COA which is listed as MM/YY, not the packing slip which is MM/DD/YY.