EVAPORATION RATE: We test the evaporation rate of our liquid nitrogen tanks by completely filling them with liquid nitrogen and tracking the rate of evaporation. CANISTERS: Each of the liquid nitrogen tanks come with six canisters; 4 canisters come with holes at the bottom to store biological specimen and 2 sealed canister for dipping. Actual holding time can vary depending on. 1 If there are canisters inside.
2 Size, temperature and heat capacity of the sample. 3 Temperature and humidity of the surrounding.
4 Any movement (during changing samples or while transporting).