Calibration of pH Meter

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Calibration of pH Meter

Importing the concept of pH and the definition of pH - A measure of acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing more than 7 with increasing alkalinity and decreasing with increasing acidity of less than 7. The pH scale normally used ranges from 0 to 14). Certain chemical compounds release H + (hydrogen ions when in water) and other release OH - (hydroxide ions. The pH of a solution is the measurement of H+ or OH - in the solution exists. pH value of p (potential power) H (hydrogen, the logarithm of the reciprocal of the hydrogen ion concentration in gram atoms per litre. The pH scale is a logarithmic scale. This means that a substance at a pH of 6 is ten times more acidic than a substance at pH 7. pH =- log (hydrogen ion concentration) =- log [H +] Using a scientific calculator.

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Before using a pH meter to calibrate it, each pH electrode is used for measurements, something different and its characteristic changes with age. Without the proper pH meter calibration results are usually at least a few tenths of the unit. pH meter calibration performed with buffers of exactly known pH (which were marketed as solutions), immersed in the pH electrode and pH meter data are corrected. I performed calibration, almost on its own (ask only change for buffer if necessary).

To calibrate, I turned the meter on using the button on top and placed electrode in the solution ...

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