Joe,

>> IMHO, it is cooking salt that varies in layers and not sea salt
>> as per one chemist's opinion. Sea salt is homogenous when
>> dissolved.
>
> ?
>
> If cooking salt is pure NaCl then you'd expect that to be the
> salt that didn't layer.

I was told so by an expert :-).

> Have you tried varying other factors - for example substituting
> a resistor for the solution to see if the drift still occurs

Nice idea, will try it out.

Cheers

Ravi

>
> Joe
>
>
>
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