What chromogenic agents?

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Varshasnata Mohanty

Hi Sajith Karunaratne

Please go through the following article:

Spectrophotometric Determination of Calcium with Dibromo-p-methylsulfonazo.

https://doi.org/10.1155/2020/9232385

Hope it helps!

Varsha

Sajith Karunaratne

Thank You. I will look into that

Nagham Turkey

using EDTA as a reagent with Echrome black -T as an indicator then measured by spectrophotometric

Nagham Turkey Thank You for the information. I will look into that.