What is the maximum resistivity of water?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The maximum resistivity of water is approximately 1.8 × 10⁷ Ω·m, achieved only with ultra-pure, deionized water under laboratory conditions. In practice, perfectly pure water (18.2 MΩ·cm or 1.82 × 10⁶ Ω·m) is considered the practical maximum, as even the slightest contamination or dissolved gases will lower this value.
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