Wine has a resistance of 74K ohms to 84K ohms.

Leave the "meter" in the wine for a half hour and watch the zinc electrode dissolve and increase the conductivity increase and the taste improve - soon it will taste like whine.
 
rjenkinsgb said:
It's not acids specifically - it's any ions in the liquid that improve conductivity.

Try the meter probes in water with salt, for example!

(That's why pure "deionised" water does not conduct).
Click to expand...
Or even "deionized" water.
 
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