Originally Posted by neilanh
Thanks Kurt, but there is a DI
stage on my unit. THe unit isn't even 4 months old yet, and I've never gotten it to 0TDS. It's a 6-stage system that I got off of ebay.
Hmmm... I'd be willing to bet that the original DI
resin that came with your unit might have been depleted to start with. When DI
resin is exposed to air, it loses it's capacity pretty quick. If the resin wasn't sealed, it might not have been very good right out of the box.
Only reason I say this is because I use straight DI
) to purify my water and I can get my water down to 0ppm with no problem - even flowing at 60 gallons/hour (that's HOURS... not days). So if you're trickling it through an RO
to start with, the DI
should have no problem stripping whatever is left down to 0. Or perhaps the TDS
meter is out of whack.
robertfah... you should be able to pick up some calibration solution somewhere if you want to double check your meter. If your LFS
doesn't carry it, then try DrFosterSmith, PremiumAquatics, MarineDepot, or any of the other big online folks.