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alkalinity question

Hi, I'm using the WATEQ database in PHREEQC and alkalinity is one of the
parameters I wish to enter to perform a speciation calculation. I have
measured alkalinity in my water as mg/L CaCO3. Do I just enter this number
in the alkalinity space, or do I have to somehow specify alkalinity as mg/L
CaCO3 somewhere in the program?

Vicky Peacey

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