Separating water from salt

Wow, that makes my recommendation a substantially lesser expensive alternative. Although it converts it into a sports drink and you cannot use it for cooking per se.
 
An ionexchange filter like zerowater should remove salt. Thing is given the amount of salt the filter element would probably have to be replaced every gallon or so. Still cheap for just in case scenarios. Will test it in a few days when I'm back home.
Right now we are using these filters during our vacation in India. No diarrhea the whole 5 weeks. :-)
 
salty to fresh is hard. But if you need water, 700 is a bargain, those used to sit in the +1000 range, so that's good.

I think that says more about your guts than it does about the filter. The site is real wiz-bang but I can't see the part where they explain what any of it does. All I'm going off is high school chemistry, but its really hard to get sodium and choline ions out of water. They say ion exchange, but with what and to what? that would have to be some kind of chemical reaction. (again, not a chemist) I mean, its worth a try, because maybe its the golden ticket. I really wish water filter makers would just stick to real science instead of marketing. But that's my hang-up, feel no obligation to entertain my grouchiness.
 
Keep in mind you can "stretch" your fresh water with a little by adding a small amount of seawater. I forget the ratio but it also takes care of the mineral, etc issue. When I spent some time in PNG the nationals drank from a spring near the reef. It was too salty for my taste but they all lived on it. We lived on rain caught off the roof. If I had to do it I would consider an alcohol type still using heat to boil the water off the salt. Evaporation would be a slow process but be prepared to burn a lot of fuel.
 
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