❀ 4. Take your new full canister and insert into adapter. ❀ Brand new and high quality ❀ 2. Place mpty canister to be refilled in freezer for approx. half hour or overnight. ❀ 1. Weigh unused full canister and write with felt-tip on the base. ❀ 3. Remove canister from freezer and place adapter onto the canister.