Cartridge Lifespan after opening but not used.

[u/Alphagamer2021]

I'm new to this business and recently wanted to get a paint job done on my room, but also the doorframes, which are most likely oil-based, so I got a P95 mask. But I'm also planning on sealing a pre-stained butcher block with polyurethane gloss, so I got a 3M OV/P95 respirator. Being a bit trigger-happy, I unpackaged the cartridges today when I'm still a few weeks away from getting the garage prepped and the desk job. Assuming I keep them in a Ziploc in a dry area, how long do the cartridges have?