Category for specialized analytical instruments that measure Total Organic Carbon (TOC) concentration in water. Used in manufacturing for process water management, wastewater treatment monitoring, pure water quality control, and cleaning effectiveness verification. Essential equipment for ultrapure water management in semiconductor and electronic component manufacturing, wastewater monitoring in chemical plants, cleaning water inspection in food factories, and water for injection management in pharmaceutical manufacturing. Quantifies organic contamination levels using measurement principles such as combustion oxidation, wet oxidation, and UV oxidation methods. Unlike BOD/COD measuring devices, these are high-precision analytical instruments that directly quantify carbon content, available in online types with real-time monitoring functions and laboratory batch types.