A vaccine need 2 to 8 degrees Celsius to be effective, and that encourages Isobar because when the substances are mixed again,
we obtain the cooling effect. It is called hygroscopic. It provides a powerful cooling effect. Therefore, this vaccine refrigerator is able to
maintain that temperature continuously for 30 days. And Broadway adds: In developing countries there are many problems with vaccine programs because they manage to reach almost to the end of the road, but in the last kilometer distribution channels and logistics break.