Hi Guys,

I have a 555 based oscillator, AC couple and the probes are in salt=20
water of a given concentration.

The probes are in water for about 1 hour from 8 PM to 9 PM and the=20
reading is 6500 Hz. I switch off the unit.

The next day at 9 AM in the morning I see that the value has changed to=20
7000 Hz.

What could be causing the drift?

Cheers

Ravi
--=20
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