2012/4/26 Ode Coyote <odecoy...@windstream.net>

>
>   It's not just amps.
> It's amps over a surface area over a period of time.
> 3 interdependent factors with 2 constantly changing variables and an
> equation to handle them.
> Thank goodness for computers.
>

The color of the solution can be used to estimate ppm.
A laser also can offer some indication...

Anyway, could you point the site where one can see this equation ?

Thanks.