How does an Expiration Date often differ from a general Shelf Life in chemical contexts?

Answer

An expiration date signifies the final day the product meets full specification, whereas shelf life can imply a period followed by re-qualification.

An expiration date generally denotes the absolute final day for full guarantee, often leading to disposal, while a shelf life in material science can sometimes be followed by re-testing and re-certification.

How does an Expiration Date often differ from a general Shelf Life in chemical contexts?
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