Thermo Bouton 22L are used for transport between sampling sites and separation or storage sites. Indeed, the storage range is narrow (only 4°C). A temperature recorder with high accuracy is therefore required.
The Thermo Button also allows the control of the temperature of the blood deposit refrigerators. For vital emergency stocks, the EFS supplies the hospital with blood bags with a Thermo Button. The hospital returns the unused bags to the EFS, which checks that the temperature has been correctly respected.