PCM refrigerant is a new type of material which is used when precise passive thermal control is needed. Because of fast development in modern medical and pharmacy, there are more needs for cheap and small size passive cold chain shipping. PCM and insulated container is a good combination for passive shipping. Depending on the shipped goods, one should choose the right PCM for the job as follows.
PCMs within insulated shipping containers normally can controll +/-3 degrees depending upon the type of insulation.