Rodi

[Rmckoy]

I refilled my di resin , as well as changed sediment and carbon filters but still getting 70ppm tds
Any time before I’ve tested shortly after installing and got 0tds

the only thing I haven’t changed and can’t remember how long ago it was is the ro membrane .

the system is a 90gpd spectipure 4 stage

 

[Dbichler]

Where are you getting the tds reading after di. If it’s after ro then your membrane is probably shot. Anything below 95% you should replace it. What is your source tds if not above 900 you ro membrane is done or not seated correctly.

 

[Rmckoy]

The tds is measured with a handheld meter and testing the water going out

I don’t have a meter . And any other time after changing filters and media has always resulted in zero
I’m leaning towards ordering and changing the ro membrane

it hasn’t been changed in a very long time .
Water going in is municipal water measuring 211 ppm

 

[Rmckoy]

That was supposed to say I don’t have meter to measure tds from different points on the unit only a pressure gauge

 

[workhz]

I'd suggest, if curious, just disconnect some components and test water in different spots. Additionally, maybe you didn't pack the DI resin very well and it's being bypassed for the most part. Even so, with only 211 going in you'd think your numbers would be lower and so probably best to tackle the membrane too before you wipe out the DI.

 

[Rmckoy]

I'd suggest, if curious, just disconnect some components and test water in different spots. Additionally, maybe you didn't pack the DI resin very well and it's being bypassed for the most part. Even so, with only 211 going in you'd think your numbers would be lower and so probably best to tackle the membrane too before you wipe out the DI.

The di resin was not as moist as it was an open bag .
I bought 2lb bag and used only 1/2 the first time .
this was the last of the bag .
perhaps this is the culprit

 

[Dbichler]

The di resin was not as moist as it was an open bag .
I bought 2lb bag and used only 1/2 the first time .
this was the last of the bag .
perhaps this is the culprit

Nope it’s your membrane 211 -95% = >11

 

[vetteguy53081]

Agree on membrane as I just had to change one when I installed a water station 3 weeks ago. TDS which mine has built im meters went to 14 and are now zero but started as 5 until water went through the system for under an hour and steady at zero