When working in the calibration mode, pH meters can automatically distinguish between buffer solutions and upgrade themselves. The pH meter is constructed in such a way that the available pH value ...

the combined 781 pH/Ion Meter also offers an automatic stirrer control, a multi-point calibration with up to nine buffers (pH mode), a method memory and various monitoring functions. The automatic ...

pH meters are used to determine the pH of a water sample or solution ... The reference electrode maintains a constant electrical potential based on the internal electrode buffer solution, independent ...