Replacement RO/DI cartridges for Water General Unit

raynist

New member
I am not sure if I even need to replace these yet, but I have been using the unit for 12 months, about 30 gallons a week or less.

I have new DI resin, but am wondering if I need to replace any of the other cartridges. I though I heard that the RO membranes last for years.

I understand that this unit doesn't use the best membranes (Dow), so where is the best place to order these filters?

Would I even need to replace these yet?

Thanks
Ray
 
No need to guess as there are specific tests you can do to determine the need to replace the cartridges.
You need a pressure gauge, a chlorine test kit and a TDS meter.
Sediment when the pressure drops 10 psi across
Carbon when you test any chlorine in the output (Use tablets test kit)
Membrane when the rejection drops below 90% for 75 gpd or less units or when the rejection drops to below 85% for 100 gpd units
DI when you detect TDS in your output.
 
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