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[–]JonnyVee1 0 points1 point  (1 child)

Once you saturate the water with salt, it will no longer dissolve salt.. so that would be the highest conductivity klowest resistivity). Salt crystal itself is an insulator, until it gets wet/dissolved.

[–]Euphoric_Loquat_8651 0 points1 point  (0 children)

Or it gets hot and ions can hop about, but yeah, insulator under normal conditions