Go to Jack Keller's site. He has a pretty good description.

Ray

"danno" > wrote in message
...
> I have finally moved from the Brew King kits to buying grapes. I picked up
> 100 pounds of Cabernet grapes the other day and they are happily
fermenting
> away (still on the skins). OG was 21.3°P and TA was between 60 and 70 I
> should have used smaller increments but WTF, it was my first time
measuring
> TA). What is the difference between TA and pH? I have a chem degree some
a
> technical answer is welcome. I haven't measured pH yet as my meter needs
new
> batteries.
>
> -Danno
> .
> --
> email me at s_danno at msn dot com
> ---------------------------------------------------------
>
>
>