Buffer pH 4.00 Calibration Solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very 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.
Buffer pH 4.00 Calibration Solution
R40.50 – R946.00
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