DLYS-201 benzene crystallization point tester is according to the regulations of the people's Republic of China GB/T3145 "determination of benzene crystallization point method" the requirements of design and manufacture, test method applied to a GB/T3145 standard Determination of crystallizing point of benzene. In the cooling of the prescribed conditions, when the sample is cooled to a temperature in the solid precipitation, temperature rise and rise, the maximum temperature reached the point of crystallization.