The rubber low-temperature brittleness tester is the highest temperature when the sample is damaged by impact under the specified conditions, that is, the brittleness temperature, which can be used to compare the performance of plastics and other elastic materials under low temperature conditions. It can measure the brittleness temperature and low temperature performance of vulcanized rubber of different rubber materials or different formulations. Therefore, it is indispensable in the quality inspection of scientific research materials and their products, and the control of production processes. The instrument is designed according to GB1682 national standard. The technical indicators meet the requirements of HG 2-162-1965 plastic low temperature impact compression test method and GB5470-2008 plastic impact embrittlement temperature test method.