Yahoo Groups archive

Homebrew_PCBs

Index last updated: 2026-03-30 17:29 UTC

Message

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

2005-02-21 by Adam Seychell

Stefan Trethan wrote:
>
> A PH sensor might work, but i find the whole automatic control would be a
> major effort,
> and would far outweigh the effort of manual care in about all situations i
> can imagine.

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.

Attachments