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1 gallon of city market distilled white vinegar =$2.50
so far after almost 300 miles, I haven't had to top it off, it'll probably last over 1000 miles per gallon of vineger at this rate. Your actually only supposed to put vinegar in the unit and then fill the resevoir with regular distilled water so as the h2o is used the acetate from the vinegar stays in the cell to charge the next amount of water, so you could even cut the vinegar usage to almost nothing. The cell stays charged for a few minutes even after the power is cut off. this indicates that the cell acts as a sort of capacitor and holds charges for a short time.
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