Shelf Life Of Oxygen Absorbers

[KevsFarm]

What would be the shelf life of an unopened, sealed in original packaging, pack of oxygen absorbers(OA)..?
Say you took your new unopened pack of OA and sealed them in a mylar bag, with a OA and stored in a cool, dry, dark place.Do they only have a certain lifespan, or can they be stored long term...? thanks..

 

[sufficientforme]

My understanding is until they are exposed to oxygen they would be fine stored long term (cool dark area, extra wrapped). After I open a bag of them I immediately put them in a canning jar, packed solid (as little air as possible) and wait to hear the can ping and seal like you are canning. I have successfully used them 6 months later maybe even longer. The ones I have you know when they are spent when the center turns orange I believe. I have several gallon mason jars with food that has been in their 2 years and they are still tight and fresh.

 

[SKR8PN]

After we opened up our package and used a few, we put the remainder in a vacuum seal bag and resealed them. They are about a year old now and still good to go.

 

[KevsFarm]

thanks for the tips folks....