This machine complies with the national standard GB/T3174-2008 "Determination of Detergency and Cyclic Detergency of Laundry Detergents". It is used for the determination/evaluation of the detergency, and for the redeposition tests as well. It satisfies the needs of the research institute, manufacturers and inspection departments for quality control of detergent products. The machine is equipped with a program-controlled heating, cooling, timing and testing system with six/sixteen (RHLQ-III/RHLQ-IV) test cups and 5-80℃ adjustable temperature range. Data is displayed on a Siemens LCD screen and/or processed with a computer linked to equipment. At present, the market share of this equipment is more than 90% in industrial testing institutions and manufacturers. In addition, it has been exported to various countries such as United States, Singapore, Taiwan, Thailand, Malaysia, etc.