Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

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.