1.Wide application 2.Timely test 3.high accuracy Instrument functions:1. It has 5.7 inch large touch screen and English operation system for easy use.2. It can measure pH, pX, ORP, ion concentration, conductivity, resistivity, TDS, salinity, dissolved oxygen, saturation and temperature at the same time.3. It provide many ion modes such as H+, Ag+, Na+, K+, NH4+, Cl-, F-, NO3-, BF4-, CN-, Cu2+, ...