With over 10 years of experience in R&D and manufacturing of water quality analysis instruments, we bring you the PROBEST PMI800 — a high-performance portable dissolved oxygen sensor probe for on-site water monitoring.Our decade-long expertise ensures the PMI800 delivers accurate, reliable data for

Tired of conductivity probe polarization & frequent cleaning for scaling, high-concentration chemical media? Our PEC-700 Electrode-Free Inductive Conductivity Sensor based on electromagnetic induction eliminates polarization issues completely.

As a professional environmental sensor manufacturer rooted in Fuzhou, PROBEST adheres to the mission "Sense the Environment, Protect Our Planet". The PEC-700 inductive conductivity sensor is independently developed for high-salinity, high-corrosion water environments, widely applicable to marine monitoring, coastal aquaculture, sewage discharge monitoring, river basin water quality automatic stations and other scenarios. We will continue to launch regular product technical training activities to deliver reliable, cost-effective water quality sensing solutions and professional technical support for global environmental monitoring partners.

Good News | Fuzhou Probest Approved To Establish Fujian Provincial Market Supervision Chief Quality Service Officer Workstation

Relationship between Nitrate Nitrogen (NO₃-N), Ammonium Nitrogen (NH₄-N), and Total Nitrogen (TN) NH₄-N and NO₃-N are key intermediate inorganic forms in the nitrogen cycle, while TN represents the total nitrogen pool.