Working Principle:

Total phosphorus: (complies with national standard GB11893-89): Using persulfate as the oxidizer, heat and digest at 120°C for 30 minutes, converting phosphides in the water sample into phosphate ions, then measuring the total phosphorus content by molybdenum blue absorption photometry. (Measurement wavelength: 700 nm)

Total nitrogen: (complies with standard HJ636-2012): Use persulfate as the oxidizer, heat at 120°C to dissolve for 30 minutes, converting nitrogen-containing compounds into nitrate ions, and adjust the sample solution pH to 2-3; Ultraviolet absorbance photometry to detect nitrate absorbance.

Instrument Features:

• Accurate measurements

  Advanced multi-wavelength detectors can achieve independent or simultaneous monitoring of total nitrogen and phosphorus. The total phosphorus analysis and measurement principles comply with national standard GB11893-89, and total nitrogen analysis and measurement principles comply with national standard HJ636-2012, resulting in more accurate measurements. It also has turbidity compensation functions while measuring total nitrogen.

• Reduced amount of consumables

  Compared to the NPW-160 analyzer, the NPW-160H Total Phosphorus and Nitrogen Analyzer saves 40% in reagent usage, while also reducing reagent replacement frequency and waste liquid generation.

• Independent heating and decomposition device

  This total phosphorus and nitrogen analyzer uses a uniquely designed heating and decomposition device to avoid mutual interference. It uses a 120°C, 30-minute thermal decomposition method that meets national standards, resulting in better consistency with laboratory tests.

• Easy to operate

  The total phosphorus and nitrogen analyzer uses a touchscreen operation interface, allowing operation even when the cabinet door is closed. Long-term data storage supports USB electronic data output, simplifying instrument operation.

• Maintain peace of mind

  This total phosphorus and nitrogen analyzer features simplified pipelines, an integrated compact design, low failure rate, easy maintenance, long service life, and reliable safety.

Application Areas:

The NPW-160H Total Phosphorus and Total Nitrogen Analyzer can be used for automatic monitoring of total phosphorus and total nitrogen in surface water, municipal sewage, and industrial wastewater.

• Surface water monitoring

  Used for automatic monitoring of total phosphorus and total nitrogen in natural water bodies such as rivers, lakes, and reservoirs, assisting in water environment quality assessment and eutrophication early warning;

• Municipal sewage sector

  Adapts to key nodes such as influent, biochemical treatment units, and effluent in wastewater treatment plants, monitoring total phosphorus and total nitrogen removal in real time to ensure effluent meets discharge standards;

• Industrial wastewater sector

  For industrial wastewater in chemical, dyeing, and food processing, we monitor total phosphorus and nitrogen content, assist enterprises in optimizing wastewater treatment processes, and meet environmental discharge requirements.