So I've invested in a Hanna pH meter that apparently requires calibration to perform accurate readings. The 7.0 calibration fluid seems a bit expensive to me.
As I recall from my few chemistry and biology courses, the pH of pure water is 7.0.
Is RO water with zero TDS pure? If so, shouldn't it read 7.0? And if it does, what is the rationale for the calibration fluid over RO Water?
What am I missing?
As I recall from my few chemistry and biology courses, the pH of pure water is 7.0.
Is RO water with zero TDS pure? If so, shouldn't it read 7.0? And if it does, what is the rationale for the calibration fluid over RO Water?
What am I missing?