Inaccurate, drifting, or unstable readings of PROBEST PINH3-900 and PISE ammonia-nitrogen electrodes can most often be resolved by replacing the NH₄N internal electrolyte. Following this standard tutorial will quickly restore accuracy, reduce downtime, and lower operating costs. Always refer to the official PROBEST electrode manual for specific filling volume and polarization time. For further technical support, please contact our service team.

On the journey to ensure drinking water safety, precise water quality testing instruments serve as indispensable guardians. Today, we sincerely recommend a star product that has stood the test of time over a decade in the market while maintaining consistently strong sales—the PROBEST PLTU-700 Turbidtiy meter.

Inaccurate Readings of Probest Ammonia-Nitrogen Ion Electrode: Complete Troubleshooting & Electrolyte Refill Instructions

Regular zero and air calibration is the foundation of reliable PROBEST Dissolved Oxygen Sensor performance. By following this standardized procedure, you ensure accurate, compliant data for wastewater treatment, aquaculture, and environmental monitoring applications. For service, support, or replacement parts, contact the PROBEST technical team.

Good news!!!To further enhance the practicality and compatibility of our portable devices, our portable series PMI800 now fully supports multiple PROBEST electrodes (including oil in water, ion types, CL, ph, ORP, Conductivity, CH, BA, DO, Turbidity, Ammonia, Nitrate, TSS, cod, Color sensors)