How can I prepare synthetic water of 500 ppm of HCO3?

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Dr Sudhir Kr Srivastava

USE NaHCO3

Arpan Sarkar

As Dr Srivastava said, you can use NaHCO3. But to my opinion, you should maintain the pH of the solution, otherwise, HCO3- can be converted into CO3=.

Jesper Knutsson

A suitable pH would be close to 8, or just over. Na or K salt of HCO3- should work just fine.

Thomas Pichler

If you use de-ionised water to prepare the solution, then there is no need to worry about the pH