THE PRINCIPLE OF COLORIMETRIC ANALYSIS
The SPI water quality system measures the concentration of peroxide or chlorine residual in water distribution on the basis of colorimetric analysis.
Colorimetric analysis is the method of determining the concentration of a chemical in a solution with the aid of a specially formulated reagent.
The intensity of the discolouration after the introduction of the reagent forms the basis for calculating the quantity of peroxide or chlorine in the water.
This process provides extremely accurate analysis.
The SPI method starts with colorimetric principles, and is fully automated and integrated to deliver a more precise and more accurate measurement than other forms of measurement, and is not affected by pH, flow or water matrix effects which frequently distort the results found in conventional measurement technologies.