With such scope where fusion temperatures are concerned, PCM packs can be configured to emit or absorb heat at +3°С or +5° С, allowing products to remain stable in the +2° to +8°С refrigerated range whether being shipped against summer or winter profiles. Likewise with the +15° to +25°С ambient bracket where the PCM melting point is around +22°С, or +37°С. Each PCM heat-accumulation substance behaves according to a solid-to-liquid and liquid-to-solid phase change processes. At melting point, the PCM absorbs and stores great quantities of thermal energy, releasing it again when it’s frozen. As temperatures oscillate, these fluids recharge. By minimising any possible effects of sudden temperature changes, Tempack PCM eutectic cold packs have been a real boon for longer distance transportation, as the integrity of shipments are protected even across hemispheres when outside temperatures fluctuate greatly. Not only is this another safer alternative to deploying the one-way, dry ice solution, it is also a reusable option.