Stef, here's how I do it;
Pipet 5ml wine into a beaker. Add about 200ml distilled water. Standardize
the pH meter. Place the pH meter electrode in the beaker with the sample.
Record the starting volume of NaOH solution in the buret. Add NaOH slowly
while stirring the sample. Stop when pH rises to 8.2. Record the end
volume of NaOH. Multiply ml of NaOH used by 0.15. The answer is %TA.

Bill Frazier
Olathe, Kansas USA

"herbeapuce" > wrote in message
ps.com...
> Hi
> I bought all the stuff I need but now I have lost my instructions.
> this is for a small batch of 5 gallons
> I have all the pipes, the PH metre, the naoh at 0.1N but no
> instructions and not equations to help
> can someone help
> thanks
> stef,Montreal.
>