TDS after the membrane should be 95% less than TDS tap if the membrane is working and rejecting 95% of dissolved solids like it is supposed to. That extra tds will make quick work of the DI Resin.
Yessir! I don't like using even 1 tds water. I like the other reading as it shows me when the filters have been cleaned somewhat. Before I utilized it and started flushing them ahead of time, I would blow through DI at a much faster rate.
If you are putting 420ppm TDS into an RODI system something is seriously off in the first place and you should be buying the water you use not trying to filter it with a tiny BRS filter.
That's actually normal in some places, not everyone has nice <100ppm . Mine runs 240 but comes out of the RO at 4.ppm.
Yours is still half of what was posted. Again, if the water is at 420ppm this person should be buying water. The CDC states that water over 400ppm TDS should not be consumed for long periods of time due to health hazards (septic water)
You moved the goal post, you said between 45-100ppm. I was pointing out mine handles my 240ppm fine.
I would also like to add it does not mean septic if you have extremely hard water. Dissolved minerals such as calcium, from areas with lots of limestone, can be the main driving factor and completely safe.
My tap is 570 believe it or not! Vegas has nasty water lol.. after my ro membrane it’s 9 and into the resin.. I had problems because my water pressure was only around 37psi so I added a booster pump to get 80psi and it saves my membrane and resin now.
And you wonder why this thread is even made. Yall are trying to filter water that is extremely high and wondering why the DI resin is dead in two days... mad I tell ya!
What’s your water pressure?
I’ve been doing it for years lol.. don’t have any other options when my tap is 570! My membranes last a couple years and I get about 1000 gallons off a dual di resin bed..
Good for you but I would tell you the same thing if you asked why your DI resin was dying after a couple days or one use.
Lol… his problem is 1 of 2 things.. bad membrane or water pressure… fix those and he will get a couple months out of it.
Just checked with some friends, they have 400+, United States is very large and has a lot of different geography and different water. Some is fine even at 500ppm.
Pretty sure he has more than one problem at this point. Most likely both are issues.
Everything points to the membrane.. either it’s exhausted or it’s getting bypassed due to low pressure.. 47 out of a membrane will kill di fast.. it can’t be anything else..
