Difference Between Expiration Date and POA
Expiration Date- A product’s expiration date (or “shelf life”) is generally accepted as the amount of time it takes a product to cease performing as outlined or advertised. Essentially, the period of time it is safe to use and will perform its function within. Depending on the type and nature of the product, an expiration date can very.
Period After Opening- Period after opening (PAO) refers to the amount of time a product will remain stable and safe for human use after it has first been opened. As such, it is very much involved with the scale of degradation a product faces in the same way as the shelf life is, however in this instance it is far more directly influenced by its first use or first interaction with the consumer (and the inevitable risk of microbial contamination therein).