Quote:
Originally Posted by Entropy
Yup.
It's pretty expensive to get that stuff out of water, and even then, there's always ions in water due to auto ionization.
One of the ways we measure water purity is with resistance. The system I use will purify water up to 18 MΩ.
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I used to work for a company that sold Reverse Osmosis water purifiers (have one in my kitchen) and we had a contraption to show the before and after RO purification process where we had a light bulb hooked up to a plexiglass tub with electrodes at the end. With regular tap water the bulb would light up. With RO water it wouldn't.
The sales guys would even stick their hands in the RO water with the current on.