Highly sensitive UV fluorometer for real-time, in situ detection of aromatic hydrocarbons (PAH), CDOM, Tryptophan-like fluorescence (TLF), BOD or Optical Brighteners.

UviLux sensors enable real-time, in situ detection of a wide variety of UV fluorescence parameters, including: Polycyclic Aromatic Hydrocarbons (PAH), BTEX, CDOM, Tryptophan-like fluorescence (TLF), BOD and Optical Brightening Agents (OBA). The compact and highly sensitive fluorometers have excellent turbidity rejection and high ambient light rejection, making them suitable for use in water and wastewater treatment works, as well as natural waters at the surface and to depths of up to 1000 m.

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Features & Applications


  • Pollution surveillance & investigative monitoring
  • Point source pollution tracking
  • Hydrocarbon monitoring in ports & coastal areas
  • Road and airport apron run-off monitoring
  • Pollution ingress into infrastructures
  • Monitoring industrial effluent discharge in natural waters


Technical Specification

Parameters PAH fuel PAH CDOM (crude)
Sensitivity (QSU) 0.06 0.03 0.03
Calibrated range (QSU) 600 600 600
Example compound:
sensitivity range (ppb)
BTEX*: 3.0 – 50,000 Carbazole: 0.005 – 80
Phenanthrene: 0.010 – 150
Perylene: 0.003 – 50
Parameters Tryptophan CDOM OBA
Sensitivity (QSU) 0.01 0.01 0.08
Calibrated range (QSU) 600 600 1200
Example compound:sensitivity range (ppb) Tryptophan: 0.02 – 1200
BOD: 0.001 – 50 mg/L
PTSA:***0.02 – 900 PTSA:***0.19 – 2,400

*BTEX is Benzene, Toluene, Ethylbenzene, p-Xylene, m-Xylene, o-Xylene at equal ppb concentrations
**NDSA is naphthalene disulphonic acid
***PTSA is pyrene tetrasulphonic acid


Size Ø 70 mm x 149 mm
Weight in air 800 g in air / 150 g in water
Pressure housing Acetal C
Operating temperature -2 °C to + 40 °C
Storage temperature -40 °C to + 70 °C
Depth rating 1000 m
Connector Impulse MCBH6MP


Input voltage 9 – 36 V
Power requirements < 1 Watt @ 12 V

The sensitivity and calibrated range of each UViLux sensor has been standardised by cross-correlating each calibration solution against a certified reference standard of quinine sulphate using a bench-top spectrofluorometer.  Fluorescence is reported in Quinine Sulphate Units (QSU), where 1 QSU is equivalent to the fluorescence intensity recorded from 1 ppb quinine sulphate at an excitation wavelength of 347.5 nm and an emission wavelength of 450 nm. Factors are provided for selected compounds to convert the fluorescence output from QSU to ppb of the compound of interest

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