On 13 Jan 2007 23:02:15 GMT, (Andrew
Gabriel) wrote:

I presume I could recharge
the ion exchange part in them them by washing through with Brine?

Nope, they use a hydrogen/calcium exchange rather than a
sodium/calcium exchange. I believe you would need to use
Hydrochloric Acid to regenerate them. If they swapped sodium for
calcium they wouldn't be terribly good for potable water.

--
Peter Parry.
http://www.wpp.ltd.uk/