X-ray single crystal diffractometer is a physical method that can accurately determine the three-dimensional structure of molecules. It is one of the important technical means in modern chemical research and is widely used in biology, chemistry and other fields. The cryogenic system is an important accessory system in the X-ray single crystal diffractometer. Crystals tested under low-temperature liquid nitrogen conditions can avoid the weathering and cracking, and reduce the thermal movement of atoms in the crystal, thus better test data are obtained.

The cryogenic system of XtaLAB Pro, an X-ray single crystal diffractomete was modified to realize the real-time monitoring of liquid nitrogen in the Dewar flask, the automatic rehydration and the remote alarm, which reduce the frequently manual addition of liquid nitrogen, improve the efficiency, save time and cost.