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AR15.COM
11/17/2008 11:14:06 PM EDT
This looks like some type of gimmick and they don't say what they are testing.

http://www.zerowater.com/

11/17/2008 11:26:25 PM EDT
[#1]
Looks like the device we used in chemistry lab to determine the conductivity of water with different chemicals added. Just another BS marketing gimmick!
11/17/2008 11:28:09 PM EDT
[#2]
It's a gimmick and totally lame.
11/17/2008 11:59:26 PM EDT
[#3]
checking dissolved solids in the water.
11/18/2008 12:02:37 AM EDT
[#4]
contaminants, solids, parts per million?
11/18/2008 12:07:21 AM EDT
[#5]
As a kid I drank out of the water hose....