AppliTek NV

- On-Line Total Nitrogen+Phosphorus Analyzer



The newly developed NIPHO On-line Total Nitrogen+Phosphorus Analyzer facilitates rapid, convenient analysis of regulatory sum parameters in effluent, river water and ground water. The water analyzer runs two different analysis cycles for the simultaneous measurement of TN and TP. Proprietary sample oxidation techniques convert all N and P species into NO3 and PO4, yet completely automated and without risks imposed on operators. The industrial panel PC controls all steps of the analysis procedure, including sampling, sample transfer, addition of reagents and data exchange.

Contrary to the traditional design of AppliTek’s colorimeters, theNIPHO employs a very compact spectrometer for the measurement of the absorbance of phosphate and nitrate at 630 nm and 220 nm respectively. The new spectrometer combines high thermal stability with low drift, and excellent signal-to-noise ratio.

  • On-line, automatic spectrophotometric measurements conform standard methods 4500-NO3 (B) and 4500-P
  • New compact, high-performance spectrometer
  • Low temperature wet-chemical oxidation
  • Compact, cost-effective mainframe with small footprint, short liquid pathways and simple maintenance
  • New: remote access and data communication through secure virtual private network (VPN)
  • Complete separation between electronics and wet part
  • Multiplexing up to eight (8) sampling points possible
  • Incorporated industrial PC with AppliTek controller software
  • Extended data communication and exchange features

Analysis methods
  • Standard method 4500-NO3 (B)
  • UV spectrophotometric measurement after persulphate destruction in alkaline medium
  • Standard method 4500-P
  • Spectrophotometric measurement using ascorbic acid reduction and molybdate color solution after persulphate destruction in acidic medium
Standard measuring ranges
  • 0 – 2 mg/L N
  • 0 – 50 mg/L N with automatic dilution (threshold  = 5 mg/L Š dilution)
  • 0 – 0.5 mg/L P
  • 0 – 20 mg/L P with automatic dilution (threshold = 2 mg/L Š dilution)
Cycle time
  • 80 minutes including oxidation of 60 minutes
  • Factory calibrated
  • Automatic, free adjustable sequence
Detection limit
  • Better than 0.2 mg/l (range 0 – 5 mg/L)

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