>From what I understand, with sea water, if you do not freeze more than
10% or so of it, the ice will be essentially as pure as distilled water.
The problem is any entrapped water, and contamination.  Thus it is best
if you can put cold tubes into the water, and have it freeze to the
tubes, producing a solid slick sheet of ice over the tubes, then rinse
with pure water, and melt.

When frozen slowly, like in a freezer, the ice crystals form throughout
the water, and are hard to seperate without contamination.

Marshall

twll wrote:

> A few years ago I got something in the mail for freezingwater to make
> it pure.It sounded to good to be true so I discarded it.Anyway what
> would the PPM be for waterthat was purified like that if it worked
> like its suppose to?