When transporting or storing dry ice, styrofoam is your friend. A Dewar flask would be preferable, but only thermos bottles are commonly available, and a lot of them are no longer Dewars. A styrofoam cooler would probably make your dry ice last the 2 1/2 hour trip as long as it's full. Large pieces are preferable just to reduce the total surface area.
Since you would be traveling in a car, you would want to make sure of good ventilation to prevent carbon dioxide build up. Storing in a freezer could help, as long as the dry ice is inside a styrofoam container. The freezer, although far above the dry ice temperature would at least slow down the heat loss. Some of your fancier ice cream places are using liquid nitrogen to make instant ice cream, so if that would do the trick for your cooling purpose, there might be a supply nearer you. ‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Thursday, January 20th, 2022 at 3:55 PM, H LV <hveeder...@gmail.com> wrote: > Does anyone here have experience transporting and storing dry ice? > > If you keep it stored in an ordinary freezer how long will ice cube > > sized pieces last? > > The closest supplier I can find is a 2.5 hour drive away. Will it even > > last 2.5 hours if stored in a cooler or thermos bottle? Would larger > > chunks be better? > > Thanks. > > Harry
