In article , Ray West
wrote:

Can anyone tell me how much citric acid is needed to lower the Ph of a
given ammount of water from Ph7 to Ph4 or 5. A search of the web has
revealed nothing.
** Posted from http://www.teranews.com **

Ray, it doesn't seem that you're liking the responses you've gotten here.
Maybe you'd have better results with the folks at sci.bio.food-science.
They are professionals. Their FAQ file was posted in two parts on May
1. There's also a May 1 post for new users. They're serious folks.
--
-Barb, Mother Superior, HOSSSPoJ
Check my new ride: http://www.jamlady.eboard.com