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Subject: Re: [Homebrew_PCBs] Re: Etchiing with CuCl2 + O2 ?

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2005-02-21

On Tue, 22 Feb 2005 09:22:11 +1100, Adam Seychell
<a_seychell@...> wrote:

>
> pH will not give reliable acid molarity simply because HCl is a strong
> acid and pH will be very low for a very wide range of acid
> concentrations. Even if pH would give you measurement, pH electrodes are
> a LOT more expensive and cumbersome to use than simple eye dropper and
> NaOH.


someone asked for a probe to automatically measure titration endpoint.
Of course without titration ph won't work.

I use eyedroppers and it is really quite simple.

ST