On Nov 28, 12:00 pm, "frederick ploegman" >
wrote:
> "jim" > wrote in message
>
> ...
>
> > Hi Gene, alcohol is definitely less dense than water, but if a wine at
> > 1.000 is not quite dry, why do they calibrate 1.000 with 0PA? Do you
> > see why I think it is confusing?
>
> > Jim
>
> The scales on a hydrometer are like a snapshot. A picture of a
> moment frozen in time. That picture is of a prepitch must with
> no alcohol in it. Once alcohol enters the picture, the claibration
> on the hydrometer is no longer valid. HTH
>
> Frederick

Now that makes it all coherent for me, thanks Frederick!