Calibrating pH meters

... Calibrating pH meters Introduction pH, a term commonly used but understood. The term pH simply is the indication the hydrogen ion concentration of a solution. The abbreviation stands for the French words 'pouvoir hydrogène' which simply means hydrogen power. pH is one of the most common laboratory measurements because many chemical processes are dependent on pH. In our modern lives, virtually everything we use has been tested for pH at one time: from the tap water we brush our teeth with, the paper we write on, the food we eat, to the medicines we take, at some point a pH measurement was performed. Although everyone is familiar with Litmus paper, the only reliable way to measure pH is using electrodes. These electrodes essentially monitor the changes in potential voltage caused by differing concentration of Hydrogen ions. Aim: Within this experiment I will be using a Ph meter to identify the pH of three unknown substances.

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