Water Demineralizer



Yes, it's true.  The device pictured above produces clean pure water, that I use for my in-room humidifiers at home.  I like ultrasonic humidifiers but they have a few issues with tap water:
The EPA recommends using distilled water or demineralizer cartridges for the above reasons.  Not a fan of buying and carting large amounts of water around I thought I'd just make a water 'still', or Demineralizer.  It would be easy, and possibly cheaper, to go buy one, but where's the fun in that?

Now, I know by looking at the above photo you may not believe this, but this is a second generation device.  My first still had a smaller boiler, used a hot plate under the boiler for heating, and a copper coil to cool the steam.  This unit uses stainless throughout and an in-tank heating element.  It is capable of producing about 3.5 gallons of water in 7 hours.

The method is strait forward: Boil water in a tank and then condense the steam in an air-cooled coil.  The result is collected in a bottle for later use.

The Boiler - what I used, internal heater.

The Coil
- details on the stainless cooler.

The water is collected in a 6-gallon carboy that I found at a wine and beer making supply store for about $18.  A short length of food-grade plastic tubing is used between the end of the coil and the bottle.



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