Buffer preparation

Buffer preparation

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Credit: ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY/ SCIENCE PHOTO LIBRARY

Caption: Buffer preparation. Researcher preparing a buffer solution. A buffer solution is a solution containing either a weak acid and its conjugate base, or a weak base and its conjugate acid. This combination means that a buffer is able to resist small changes in pH when small amounts of acid or base are added to it. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications.

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