China Ammonia Nitrogen Analyzer Manufacturers & Suppliers

The Salicylate method (ISO 7150-1) uses sodium salicylate and sodium dichloroisocyanurate to form an indophenol dye in the presence of nitroprusside catalyst, yielding a green-to-blue coloration. It is environmentally safe, non-toxic, and widely accepted by global environmental protection agencies. In contrast, Nessler's reagent relies on potassium mercuric iodide under alkaline conditions; while reaction kinetics are rapid, it produces hazardous mercury waste that requires specialized disposal and faces strict prohibitions under the Minamata Convention on Mercury. BOQU primarily configures Salicylate spectrophotometry for export markets.

Under standard sampling cadences (e.g., one measurement cycle per hour), BOQU's micro-metering fluidic system consumes approximately 1.0 to 1.5 mL of combined reagents per test. With standard 500 mL onboard reagent reservoirs, replenishment intervals typically range from 30 to 45 days. Fully automated zero and span calibrations are programmable via the controller interface and commonly scheduled on weekly or bi-weekly routines using certified standard solutions.

For municipal influent, aeration tanks, or raw industrial discharge containing suspended solids exceeding 50 mg/L, BOQU equips analyzers with an external self-cleaning bypass filtration system. This comprises a stainless steel mesh (typically 50–100 μm) immersion filter, an automated high-pressure compressed air or water backflush sequence, and an integrated peristaltic delivery pump to prevent particulates from settling inside the optical chamber or clogging reagent delivery capillary lines.

Yes. All BOQU industrial analyzers and digital IoT sensors feature standard RS485 interfaces operating on Modbus RTU protocol, alongside isolated 4-20mA analog loop outputs and configurable SPDT mechanical relay switches for alarm triggers and pump control. Optional 4G/5G wireless telemetry gateways and Ethernet Modbus TCP/IP modules are available for seamless SCADA, DCS, or remote cloud platform integration.

Shanghai BOQU Instrument operates under ISO 9001 quality management and ISO 14001 environmental management frameworks. Our products carry CE conformity marking, SGS manufacturing audits, and select FDA material compliance. Prior to dispatch, every analyzer undergoes a rigorous 48-hour continuous burn-in procedure, optical line-drift evaluation, and multi-point calibration verification accompanied by a formal Factory Acceptance Test (FAT) certificate.