A plot of a @V06600@ related to a relevant concentration (activity) as the ordinate vs. some measure of the amount of @T06386@, usually @T06387@ volume (titre) as the abscissa. If the @V06600@ is linearly related to concentrations, such as the electrical @C01243@ or the photometric @A00028@, the term linear @T06387@ curve is used. When a logarithmic expression of the concentration or activity is used, such as the \(\text{pH}\), \(\mathrm{pM}\), or the electrical potential in \(\mathrm{mV}\), the curve is referred to as a logarithmic @T06387@ curve.
Orange Book, 2nd ed., p. 49 [Terms] [Book]