The latest addition to the Alert range from Applikon Analytical is the Alert Colorimeter for Nitrate, which can be supplemented with the Alert Colorimeter for Nitrite for full compliance monitoring.
The Alert Colorimeter for Nitrite uses the Differential Absorbance Colorimetry (DAC) methodology to prevent background sample colour or turbidity from adversely affecting the analysis.
The working range is 0.3-150ug/l with a cycle time of around 20min.
The running costs are kept to a minimum by low reagent use - typically 1ml per analysis for each reagent - and minimal consumables.
Attendance for planned maintenance is usually carried out on an annual basis.