Aluminium or polcone?

[AnarkiVape]

Im looking to get some glass containers to store nicotine in the freezer from ampulla, do aluminium or polycone type screw tops freeze ok? is one better than the other? Im new to this apologies for the possibly silly questions

 

[keith1664]

Polycone, it's designed to give an airtight and leak proof seal, which is kinda what you want really.