It's ok, but it does not include a flush kit. Flushin ghte membrane before and especially after a run will prolong the life of the membrane.
Also I follow the filter recommendation from AirWaterIce in my 5 stage RODI
of a 10 micron sediment > 5 micron Carbon > 1 micron Carbon > membrane. The DI
is the final stage.
Be sure to get a TDS
meter so you know when the DI
needs to be replaced. I now refill mine.