Quote:
Originally posted by manderx
what's TFT? I've only heard of CTA and TFC. who makes it?
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my bad, I didn't check my typing it is TFC, I guess I got too excited
oh, and the RO creep, I have seen it on RO's that equalize only after been off for a while, but if you are using the system on a top off and also for drinking water the membrane will stay pressurized for the most part, as the auto shutoff will close when the tank is full and no more water can enter the system, so the auto shutoff closes and the RO and filters stay on pressure, just not flowing, so it is static pressure. we have few customers that run RO water on labs, for either Medical, Chemical or Industrial, and we have tested the TDS creep, because they want the purest water without going to DI or Distilled. so yes they are papers on the effects of equalization of the membrane, but when plumbed correctly you will not see an increase of TDS. or the most I personally seen is a system that produced a TDS of .002 on a supply of .366 TDS and the creep set up the TDS after 12hrs of the RO being off at .008 for few seconds or about 3oz. and this was on a membrane that was about 2yrs old.