[ian grant]

The TDS reading (after changing my resin) of my water from my ro system is the same 0.06 before DI as it is after DI I was told that DI should remove the last dissolvable solids is this correct? If it is what could the problem be?

[Jason E]

Hi,

The TDS reading should go down again once you change the resin.
Sometimes they do need to run for a little while to get all the old water out the DIs and pipes etc.

I find it gradually drops after a change.

Jase.