I wrap my chemicals in a thick layer of those gel packs and then layers of bags, to smooth out trmperature fluctuations. If you do that in the freezer, you might be able to svoid the little defrost melt events if you’re using your regular frost free freezer.I must be cheap reading how everyone stores their vials in the freezer. I literally just leave them in the plastic case and put them in the freezer 😆