What's your TDS?

[afboundguy]

With my recent RODI upgrade a few days ago my mixing station got low enough to start making RODI water again so I went to check the TDS readings. It's about 350 going into prefilters then down to 180'ish and then 0 after the double membranes and 0's before and after all the triple resin stages!

It used to be around 5 TDS after the RO membranes so looks like the upgrade adding the two extra prefilters made a difference! So what's your TDS before and after all your stages?

 

[BiGGiePauls33]

Before is about 50-90 after 0, also depends on filters. I just changed them all a couple weeks ago

 

[Swordsman82]

Before filtration 400ish. After sediment, carbon, and RO around 9-10. After first DI 0 TDS, and i have a second chamber for redundancy.

 

[#Angels&Demons]

I'm new to RODI, so I might not be giving you the numbers you're actually asking for, but I have this triple TDS meter on my BRS six stage that reads 000 across all three "zones, sections," or whatever they're called. I have the water saving upgrade with the extra membrane; but I also have a whole home filtration system that is definitely responsible for this 000 reading—I know this because I was getting some type of TDS reading in the first zone, and even a little in the second zone, before having the Puronics system installed.

 

[dilligaf29]

72 before after small rodi buddy 0

 

[Mike Lemming]

I just checked mine a couple days ago. 149 from the tap, 5 after membrane and 0 coming out at the end.

 

[shrimpchips]

65-85 depending on the season, about the same after prefilters, 0-5 out a double membrane setup, 0 out the DI resin. Usually replace prefilters every 3-6 months as they get very dirty, and DI whenever I notice it start to creep up to 5.