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Subject: Re: [Homebrew_PCBs] CuCl pH testing

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2007-12-10

Yes, it's a good idea that.
Since i already have the indicator, i use that. I rather stupidly
bought quite a large amount (for an indicator), which will last me for
the next two million years or so. The day after i got it i was
wondering if i had an eyedropper bottle somewhere, so i got out my old
chemicals set. Guess what, in there was an eyedropper bottle filled
with just that same indicator. Haven't even opened the one i bought,
how stupid is that?

Anyway, you don't need it, but it makes things easier to see.

ST

On Dec 10, 2007 1:22 AM, lists <stuart.winsor.lists@...> wrote:
> In article <255096.97029.qm@...>,
> YD <yd_br@...> wrote:
> > Your method is what works for me, except I use the
> > solution itself as an indicator.
>
> I was wondering about that. With a strongly coloured solution it would be
> difficult to see the colour of most indicators.
>
>