The HI 9124 and HI 9125 are heavy-duty, waterproof pH meters that provide laboratory results and accuracy under harsh industrial conditions. HI 9125 can utilise ORP (Oxidation Reduction Potential) electrodes. The HI 9126 includes all of the features of the HI 9125 but also includes Hanna's exclusive Calibration CheckT technology and a backlit LCD. Calibration CheckT monitors the condition of the pH electrode every time the instrument is calibrated. In the event of a dirty pH bulb, Calibration CheckT prompts the user that additional cleaning may be needed.

Each of these models use the HI 1230B double junction pH electrode. The HI 1230B's double junction minimises electrode contamination leading to accurate, consistent results and extended electrode life. 

Lab Asia Dec 2025

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