Quote Originally Posted by eddie
You are right about being a pain to have someone test it every time but if I can verify that my tds is working properly then why would I want to buy another one. Pete, I might contact you next week if you don't mind.
Filters don't last forever. Any RO unit needs to be tested periodically to know if its ready to be changed or if the RO membrane is ruptured. That's what happens when the carbon filter is exhausted. The chlorine destroys the RO membrane.