Specialized pH measurement equipment used for quality control, process management, and environmental monitoring in manufacturing industries. Supports precise measurement of acidity and alkalinity in plating solution management, wastewater treatment, chemical formulation, and food manufacturing processes. Includes portable, benchtop, and online types, with waterproof specifications and high-temperature compatible models. Includes consumables such as calibration solutions, electrodes, and standard solutions. This is a dedicated hydrogen ion concentration measuring instrument with different measurement principles from other analytical equipment (conductivity meters, dissolved oxygen meters).