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 ...

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 ...

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 ...