When evaluating a RO
unit, I look for a couple of things:
1.) Clear prefilter canisters so I can see how dirty they are getting.
2.) 10" full size, vertical DI
cartridges because there is little possibility of channeling and they hold more resin.
3.) A high rejection membrane. While they claim, their membrane "removes 98% to 99.99% of all chemical and harmful dissolved elements and 99% of all bacteria" their claimed TDS
changes show a different story. "(1.)Tap or well water(300 PPM
) ---> (2.)After RO
) ---> (3.)After DI
)" That would be a 93.33% rejection rate. I believe SpectraPure units are 98% rejection units. That means you will use that much less DI