JIRS pH sensor series offers five industrial online pH combination electrodes — GP-100, GP-100T, GP-100 PTFE, GP-100T PTFE, and GP-400G — covering 0–14 pH measurement across 0–120 °C. Featuring gel electrolyte salt bridges, anti-fouling PTFE or ceramic diaphragms, and low-impedance glass membranes, these sensors deliver ±0.01 pH accuracy with 5-second response. Options include ABS, PTFE, or high-temperature glass bodies, with or without PT1000/PT100/NTC temperature compensation, for wastewater treatment, chemical processing, and corrosive environments.