Homebrew PCBs

Adam Seychell <a_seychell@...> writes:
> pH is nothing more than a logarithmic scale of hydrogen ion
> activity.  Some of your HCl will be exists as HCl molecules while
> the remainder dissociates as hydrogen ions and chloride ions. To
> further mess up pH, not all of these hydrogen ions are active at
> such high concentrations.  Since pH only responds to active hydrogen
> ions you will get a false low acid reading.

Ok, that seems obvious enough with that explanation.  Thanks!