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  #11  
Old 04-15-2013
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Re: Making Distilled Water?

Quote:
Originally Posted by rockDAWG View Post
That is interesting. In the old days, the double distilled water is the gold standard of water used in the laboratory. Starting in early 80's RO and deinoized water is the standard in the ultra pure laboratory.

The double distilled water has a conductance of 11 uS/cm and 10 mg/L of dissolved solid while Type II and II water (RO ) has conductance of 1 and 5 uS/cm and no measurable dis-solvable solid.

I use Type I water daily which has conductance less than 0.057 uS/cm in our half million dollars Tandem mass spectrometers. I don't know what to say, but I trust my training in analytical chemistry more than I trust other's.

But in the real world, the life of a battery is fitly. A speck of dust is sufficient to contaminate the battery cell. After all batteries are not manufactured in a sterile and dust free environment. In other words, using distilled or RO water will make no difference in the longevity of the battery.

Perhaps all of the foregoing is correct in a laboratory setting. I doubt, however, that it is so for the RO Product Water coming out of the Spectra aboard the yacht and something tells me I would be wise to observe the counsel of the folks at Trojan if at all possible, eh?
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Old 04-15-2013
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Re: Making Distilled Water?

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Originally Posted by svHyLyte View Post
.....a few ounces every two weeks or so...
Assuming, that is five ounces, which is way more than it should need every two weeks, one gallon is still a full year supply for year round use. The few dollars that the water cost will probably be burned up in fuel trying to make it.

I think there are many more profitable DIY projects to spend one's time on.
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Old 04-15-2013
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Re: Making Distilled Water?

I'm not saying try it but - the pressure pot filled with a good corn mash and the same condensing tubes...
Got no corn? Fruit, potato, etc.

I don't know what you are thinking, but alcohol is a dang fine solvent and cleaner.
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Old 04-15-2013
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Re: Making Distilled Water?

HyLyte, I'd just spend $2/gallon and buy some deionized water gallons at the supermarket. Find a place to stash 'em and be done with it.

The traditional material for steam condensation coils is copper tubing, and you can buy rolls of thin-wall small diamter tubing at the hardware store, used for refrigerator or watermaker hookups. Copper has a natural anti-bacterial quality that plastics and stianless don't have, you don't want funk growing in the tubing.

Or, you buy a small "solar still", put a pint or two in it, and let it distill quietly in the sunlight while you are cruising. Low output, but readymade, no stove needed, it should be enough for your batteries and you can also grab it if you need to abandon ship.

I'd still opt for a couple of gallons from the supermart and take the easy way out. Water tanks leak, plumbing leaks, having a couple of gallon jugs of extra water shouldn't be a stopper.
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Old 04-16-2013
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Re: Making Distilled Water?

After pondering the matter I have decided the distillation business is rather too much brain damage and decided on another course. Last evening I poured out a gallon of distilled water in four ounce measures into plastic single serving containers that are now in the freezer. This evening I shall enclose each resulting ice-cube in a vacuum bag with our FoodSaver. The bags themselves are quite sturdy and will lend themselves to being stashed in old socks in the battery boxes for use when necessary. These, coupled with a gallon jug that we keep under the sink in our aft lavatory should be adequate for 6 - 12 months even in the outermost out islands. (Never the less, I shall obtain a "Solar Still" as suggested, just for the exercise, eh?)

FWIW...
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Re: Making Distilled Water?

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Originally Posted by chucklesR View Post
I'm not saying try it but - the pressure pot filled with a good corn mash and the same condensing tubes...
Got no corn? Fruit, potato, etc.

I don't know what you are thinking, but alcohol is a dang fine solvent and cleaner.
Sounds like an Appalachia hillbilly still.
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Old 04-16-2013
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Re: Making Distilled Water?

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Originally Posted by rockDAWG View Post
Really? Call up your local friendly state university and ask for the analytic chemistry department.
Really? I have a meter which reads the selenity of my RO water and get readings of around 200PPM. RO water from the marinas I have been to usually produce readings in the 600PPM range. The meter is actually reading conductivity/resistance. Distilled water should read zero and is used to wash electrical transmission poles where the lines have voltages of 29,000 volts.

I really fail to see why the OP has a problem. A one gallon jug should last him long enough to get from one port to another and distilled water is readily available. A one gallon container takes up less space than a still or sixteen 8 ounce containers.
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Re: Making Distilled Water?

In my opinion, it is much easier to store ready distilled water instead of manufacturing it. If you really want to distill your own water, use sea water.
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Re: Making Distilled Water?

I think the OP came to similar conclusions, based on his post (#15) above.
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Re: Making Distilled Water?

Dehumidifier, even a very small one? This one can run on 110v or 12v and will produce all you need overnight. But mold is the reason.

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