Thanks, Ian, for your thorough response. Look here for an explanation
of how RO is used to remove VA. (Even more interesting, how it was used
in Australia to remove smoke taint from wine made from grapes that were
exposed to wild fires.) For the moment, I too am not judging the ethics
of using RO.
http://www.winenet.com.au/articles/W..._DWollan03.pdf
Andy "Keeping an Open Mind" Thomas