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.

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.

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

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)

PROBEST Digital Sensor Product Upgrade AnnouncementAs a professional manufacturer of water quality analysis and monitoring instruments, PROBEST consistently adheres to a relentless pursuit of excellence in R&D, dedicated to continuous product quality iteration and performance upgrades, providing rel