Online nitrate measurement can be achieved using either a UV absorbance method or a colorimetric method. Which is the best available technology is dependent on the application.

Nitrate has a strong absorbance peak at low UV wavelengths and due to the low maintenance of operating a UV sensor and the wide dynamic range it offers, is often the preferred method.

In some applications, it may be preferable to combine chromatography with UV analysis in order to ensure separation of nitrate and nitrite prior to UV analysis.

Alternatively, for low levels of nitrate, a colorimetric method might be utilised.

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s::can spectro::lyser

An online UV-Vis spectrophotometer for nitrate measurement and more in drinking water and wastewater applications

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Online nitrate sensor for drinking water and wastewater


A new approach to online nitrate and nitrite measurement combining chromatography and UV absorption for nitrate and nitrite analysis


Industrial nitrate colorimeter for wastewater applications

Online Colorimetric Analyser


Compact nitrate colorimeter for drinking water applications

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