Wine Acidity

[coatesg]

Hi guys,

Can anyone explain the measure of acidity in wine at all? I have a Ritchies test kit that measures acidity in ppm (by performing a rough titration using 5ml of wine, phenolphthalein and a stock NaOH solution), but I see figures also quoted in % terms and even pH (which don't match up to the recommended figures in the Ritchies kit of 3-4.5ppm).

Also unsure of the usage of the equivalent values in terms of malic/tartaric - how do you account for these when adjusting acidity in the wines? Is there a conversion from the values the Ritchies kit gives to ppm values?

Thanks! I'm a bit confused by it all (especially not really drinking the stuff myself!)

[lockwood1956]

See here

http://www.winesathome.co.uk/forum/show ... php?t=2005


hope this helps
regards
Bob

[coatesg]

Ah - brill - thanks for that. I've read it a few times and I think it makes sense...