Hanna PHEP4 pH tester not only offers an expanded pH range from -2.0 to 16 pH but also an impressive pH resolution of 0.1pH with a +/- 0.1pH accuracy. To achieve this, the tester employs a replaceable Hanna PHEP4 pH Probe electrode.
It's electrode is built to offer durability without compromising on precision. It, therefore, has a stainless steel round connector. The cartridge here is designed such that the probe has no pins that one as to line up or that can be broken.
It's electrode additionally has a cloth junction that is extractable. The junction makes use of a single ceramic fit to act as a barrier between the sample being tested on the outside and the reference cell inside.
Electrolytes, therefore, diffuse through this junction for pH measurement to occur. If clogging were to occur at this junction, pH measurements would become erratic. However, the extractable junction in the Hanna PHEP4 pH Probe can be removed and renewed to prevent clogging.