Don't know, but why would you want to?
Because my TDS out of the RO is 12 and i could do away with resin
Fine.
We run up to 10, then monitor daily and change resin at 15
Never any problems
Thanks Ian, good to know
Long term it would be a NO NO as eventually you will get a build up of all the crap your RO & DI removes
A tds reading of 10ppm to 15ppm can change within one fill of a tank , I have cleaned with 17ppm and 25ppm without complaint i was aware of the reading both times i had ran out of resin or filled my truck tank and then checked tds .
As it was the last day of the week both times i knew i would be ok as a one off , A few month ago i was not checking my TDS as often as i should have been and it got to 57ppm which is normal tap water in my area and i only got 2 complaints .
But how i never got more i do not know . Mike