Water Quality Measurement Device for Life: You can test water quality for daily use.Water quality testing results show if you change or clean your water filter or filter.It is necessary for water safety and health management. [Water Quality Management for Agriculture and Breeding] It is important to manage water quality of hydroponic agriculture and fish breeding.Our water quality measuring device has a measuring range of 0 - 9990 ppm, and has a wide measurement. It can be used normally at a water temperature of 0 - 50 degrees Celsius.Can be used in a variety of agricultural and breeding environments.Useful for water quality control. (Supporter for Water Research) Can be used for research such as rivers, lakes, and sea water quality inspection, data taking, etc.Wide measurement range and accuracy +/- 2%, suitable for general research.