Homebrew PCBs

Thanks for the additional info, Adam. What kind of methyl orange are
you using - aqueous? What percent, 0.1% or....?

(MO seems to be more readily available than bromophenyl blue and not
too pricey). What is the shelf life of the stuff?

I haven't figured out how to access usenet groups with my current
setup, so MO seems the easiest way to go.

Grant

--- In Homebrew_PCBs@yahoogroups.com, Adam Seychell
<adam_seychell@y...> wrote: [snip]

> Yep, that sounds about right. I think the best thing for you to 
> do is post that question on sci.chem news group explaining you 
> are titrating  HCl in cupric chloride. approx. strengths 1 Molar 
> and can accept few percent error. I am using methyl orange with 
> good success.