I have a 75GPD BRS 5 stage RO/DI unit. I've upgraded the TDS meter on it and I'm currently running the in prior to going into DI and the out after. The in is reading 14 and out is reading 5.
I realize that this isn't the typical setup for TDS, but I just rebuilt the unit and installed the TDS incorrectly. However - I'm concerned that it's coming in so high after passing through 4 stages.
All cannister cartridges are a month old. The R/O membrane has about 15 months into it. I'm guessing it's the R/O membrane? The D/I resin is also just a month old.
I realize that this isn't the typical setup for TDS, but I just rebuilt the unit and installed the TDS incorrectly. However - I'm concerned that it's coming in so high after passing through 4 stages.
All cannister cartridges are a month old. The R/O membrane has about 15 months into it. I'm guessing it's the R/O membrane? The D/I resin is also just a month old.