The airtight canister I use to store the amber glass has access on the bottom and the top. I open the "valve" on both top and bottom and purge all O2 out of it, quickly sealing Argon into the container. I also flush my amber glass container the paper is in. You take a large zip lock bag. put the vials in, with the tops off. Then, I purge the bag thoroughly of air and with Argon. Then, carefully, I screw the caps back on the vials, while in the argon filled, sealed right through the bad. Hence, no air in the vials. Works like a charm. If you want small canisters of Argon, they are sold as a wine preserver, and can be gotten online for a few bucks a can. Make sure you get pure argon, and not a blend. Dry, cool, no light, no O2. Works like a charm.