A pH meter is a type of voltmeter with high impedance of the input channels. The high impedance is necessary because of high resistance of the pH glass electrode used with pH meters.
pH is a measure of acidity or alkalinity. The amount of hydrogen ions cause a liquid to either be acidic (high concentration of hydrogen ions) or alkaline (low concentration of hydrogen ions). With the advancement in technology conventional glass Ph testing equipment has been replaced with non glass silicon chip sensor PH equipment in various industries. These equipments are used for continuous monitoring or analyzing of the pH balance.
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