The MidiLab9000-E/P/T wet metallurgical element online detection system is a liquid sample online process detection system used in chemical new energy and wet non-ferrous metallurgical factories. Especially for real-time detection of leachate, electrolyte, and waste liquid during the production of non-ferrous metals such as nickel, copper, zinc, and lithium using extraction and electrolysis processes. And timely alert and retest in case of abnormalities. It can perform elemental analysis detection, particle size analysis detection, titration analysis detection, acidity analysis detection, concentration analysis detection, etc.