There are manufacturers specializing in dry ice in the market. Generally, they have a variety of sales channels, such as large supermarkets, cold drinks shops, hospitals, cold drinks wholesale and so on. If we need it, we can buy it in these places, and sometimes we can buy it online.
Dry ice is solid carbon dioxide, which is condensed into colorless liquid under the pressure of 6250.5498 kPa, and then rapidly solidified under low pressure. Colorless, odorless and nonflammable, it will release a lot of white fog when sublimating, which can quickly freeze objects and reduce the temperature.
Dry ice is edible. Add dry ice to wine, cocktails or drinks to make them cool and delicious. Dry ice is added when making ice cream, so the ice cream doesn't melt easily.
Storage method of dry ice
1, dry ice must be stored in a special freezer, so that dry ice can be stored for 5- 10 days. After the storage period, dry ice will start to form ice balls or even vaporize, and the use effect will be significantly reduced. After each use, be sure to take the remaining dry ice out of the machine and put it in the freezer.
Another common method is to keep it in a dry thermos. There is a vacuum layer between the container of the thermos bottle and the outer wall of the bottle for heat insulation, and the gas generated by evaporation of dry ice can be released from the gap between the bottle stopper and the bottle wall, thus reducing the internal pressure.
3. The dry ice should be stored in a special storage box, but there is still loss. A good storage box can reduce the loss to 6‰, but it is expensive. Ordinary families don't have special boxes, so they can be stored in ordinary foam boxes.