TOTAL CHLORINE BUFFER SOLUTION 500 ml
Part No. RXSOL-60-6206-050
Total chlorine reacts with the potassium iodide solution and oxidizes the iodide to iodine. Both the iodine and the free chlorine react with DPD (N,N-diethyl-p-phenylenediamine)- colour solution to form a highly intensive pink coloured complex. The a
Total chlorine reacts with the potassium iodide solution and oxidizes the iodide to iodine. Both the iodine and the free chlorine react with DPD (N,N-diethyl-p-phenylenediamine)- colour solution to form a highly intensive pink coloured complex. The absorption is measured at a wavelength of 510. nm.
Analysis steps
The analysis vessel is cleaned and filled with fresh sample. After sampling the initial absorbance value is measured at 510 nm. Next, the potassium iodide, the colour solution and buffer solution are added and after respecting a stirring period – performed to obtain complete colour development – the final absorbance value is determined. With the obtained absorbance values, the total chlorine concentration can be calculated according to Beer’s law.
Dosage
Calibration
The calibration procedure measures a REF1 Cl2 solution (channel 9, REF1 valve) and a REF2 Cl2 solution (channel 10, REF2 valve) to adapt the slope and offset factors by means of a two-point calibration. The calibration is performed in the MAIN method.
Supply Locations
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