I just changed my RODI membrane as well as the DI cartridge.
Now do I need to discard the first 10 gal of water as if I am running the system for the first time? It is only reading 2 TDS on the first 2 gal I ran through.
It isnn't really the initial TDS that is the problem, it is the preservative used on the RO membrane that needs to be rinsed off. Dump the first 5-10 gallons.