RO-DI water tds

[javatech]

I just got an tds meter and before i change my DI cart. i wanted to find out if 002 tds was good. the water going in is 365 in tds. any ideas

 

[javatech]

Yea that's what i was thinking. after 6 months i guess it's time to change it
i think it had about 500 gals run in the di