hercules_upw
Daemon Poster
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i remember reading somewhere, that water it self is not electrically conductive, its the impurities on it that make it that way,
You are correct
The resistance of ultra-pure water is 18.2 million ohms. it is a decent resistor. The problem is that when you expose ultra-pure water to air, it instantly absorbs oxygen and carbon dioxide from the atmosphere. The addition of carbon dioxide from the air forms carbonic acid. The carbonic acid has a pH around 5.5 and DOES conduct electricity.
Ultra-pure water can be described as the most pure form of water that is possible. Contaminants are most often measured in parts per trillion.
I work on and operate the equipment that processes ultra-pure water or UPW.