Burkert 418541 pH Buffer Solution, 500ml Bottle, 7

A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or conversely. Its pH changes little when a small amount of strong acid or base is 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.

• pH solution for setting up and calibration of pH probes