What are the safety precautions for the lab low temperature control system?

A lab low temperature control system is essential for protecting temperature-sensitive reagents, but it also introduces specific hazards that must be managed proactively. First, every lab low temperature control system should be equipped with redundant temperature alarms and an uninterruptible power supply; these prevent silent failures that could destroy valuable samples or trigger dangerous decomposition reactions . Second, personnel must wear insulated gloves, face shields and cryo-aprons when interacting with the lab low temperature control system, because direct contact with −80 °C surfaces or liquid nitrogen can produce instantaneous frostbite . Third, good ventilation is mandatory: a lab low temperature control system that uses compressors or dry ice can displace oxygen and create an asphyxiation risk, so oxygen sensors and forced-air exchanges should be verified before each shift . Fourth, only explosion-proof electrical devices should be installed inside or near the lab low temperature control system; flammable solvents that are stable at room temperature can form ignitable vapours when chilled, and ordinary switches may spark an explosion . Finally, written emergency procedures must be posted on the door of every lab low temperature control system area; they should spell out how to extract a colleague who collapses inside, how to shut down refrigeration circuits, and how to isolate spilled cryogens without delay . By integrating these precautions into daily practice, laboratories ensure that their lab low temperature control system remains an asset for science rather than a source of accidents.