Originally Posted by Cha0s_Cha0
Adding anything to distilled water will make it conductive. … It's also exponential. The more impurities there are in the water, the faster it'll become conductive.
That is simply not true.
An example, fresh from another post: Pure water (though self-ionized at equilibrium) is far more conductive than the same water with dissolved neutral mono-atomic gasses in it, by several orders of magnitude.
make water conductive. Dissolved neutral molecules do not. Dissolved stuff interacts with other dissolved stuff in very complex ways, so for example dissolving substance A may change the pH and affect how it dissolves material B, causing it to hold less of it. As is shown by the example of gasses, some things will
make the water less conductive. You can have non-linear effects in materials prepared for the purpose: an electric field causes a countering effect, so charge does not move through the water. Suspended particles can cause local polarization around them, blocking the effects of ions. And so on.
It is generally assumed by posters that commercial "non conductive" coolant is no less conductive than grocery-store distilled water. That has not been shown to be true with any cited reference as long as I've been following these threads. If you have such fluids, test them, or see if the bottle makes more specific claims. Or, send me a small sample and I'll do some experiments.
It would be a good excuse to finally get my Tectronix meter serviced