Apera Instruments AI4739 Water Hardness Electrode (Built-In Temperature Sensor)

Features:

• The 601 water hardness combination electrode is the replacement probe for Apera Instruments YD300 Portable Water Hardness Meter that is proven to produce the same accuracy as the traditional EDTA Volumetric Method but in a much more convenient manner.
• Unlike the traditional EDTA Method, There is no need for probe stirring or adding reagents during tests, and you can directly measure your sample solutions' ion concentration just like pH testing.