reverse osmosis

[canadawest]

<UL TYPE=SQUARE><LI>Water straight from the tap: 17ppm
<LI>Water from the fridge dispenser (carbon filtered): 17ppm
<LI>Water from my Reefpure Tornado (4 stage RO/DI): 0ppm[/list]
I suspect that removing the chlorine doesn't really change the TDS of the water as it's likely the phosphates (which test at 2-2.5ppm in my tap water) and other metals or minerals that keep the reading at 17.

All I know is it tastes better and is odourless out of the fridge, compared to a glass of straight tap water. (Works the same as Brita filtered water)