Hooo Boy! Here we go with eutectics, solubility curves, sequestration an' who knows what-all. I hope someone really knows the field, and will respond on the list. About all I'm aware of is that maple sap can be concentrated into syrup by freezing rather than the usual wood-wasting process of boiling it (the water) off.

At 12:16 PM 12/14/02 -0500, you wrote:
A few years ago I got something in the mail for freezing
water to make it pure.It sounded to good to be true so I discarded it.Anyway what would the PPM be for water
that was purified like that if it worked like its suppose to?