Originally Posted by Anna_Purna
Aren't primers packaged in a cardboard box from the factory sitting in a store or warehouse floor subject to humidity as well? I mean, I have never seen them shrink wrapped and in air tight containers.
they are typically stored in climate controlled areas. the short trips to stores and sitting on shelves isnt long enough to hurt them. it takes years in a humid climate to damage a primer.
i dug up an old very old box of cci primers i bought in the late 80's and had been stored in boxes of household goods in houston other parts of texas (all damp and humid) and here in wisconsin. for almost 3 decades. they still worked fine when i discovered em.
odds are they will work fine even if abused.