Alkaline Buffer

Relative acidity or alkalinity of materials is measured by the potential hydrogen ion concentration using the pH scale. The pH scale ranges in value from 0 to 14, with a pH of 7.0 considered neutral, while values below 7.0 are increasingly acidic and above 7.0 increasingly alkaline. An alkaline buffer is a substance with a pH of over 7.0 that has been added to a material to neutralize harmful acids or to act as an alkaline reserve for the purpose of counteracting acids that may form in the future. The most common buffers used are magnesium carbonate or calcium carbonate.