Liquid ammonia sampler is an instrument used to sample liquid ammonia, which is mainly used for the analysis and detection of liquid ammonia in industrial and chemical laboratories. Liquid ammo- nia is the liquid form of ammonia at low temperatures, which is similar in property to gaseous ammonia but has higher density and liquefiability. Therefore, sampling methods for liquid ammonia are essential in many industrial and laboratory applications.Sampling equip- ment includes components such as condensers, valves, pumps, etc., and by controlling the operation of these components, liquid ammonia can be collected from industrial pipelines or lab equipment into sample vials.