RODI Filter/Prefilter suggestions

[pledosophy]

I have an RODI filter with 5 prefilters before my DI chamber. I haven't replaced them in years and my DI cartridge has finally changed colors. I am looking to replace all the filters at once.

Other then putting the DI resin in the DI chamber what would you suggest, and in what order for the other 5.

Thanks!

 

[Mike konesky]

1 micron sediment, .2 sediment, .5 carbon, .5 carbon, .5 carbon. There are other cheaper options. Depends on how much you want to spend.
5 sediment, 1 sediment, 1 carbon for rest would be much cheaper.

 

[KStatefan]

I would do this

Sediment - Carbon - Carbon then switch the other to Anion - Cation - Mixed

But if you have not replaced in years that is probably overkill

 

[PHXHobbies]

Get cheap 1 micron sediment filters, replace them when pressure drops.

Get 1 micron the 0.5 micron carbon filters. If you have chloramines then go with 0.5 micron then a chloramine removal filter like a ChlorPlus

Membrane - always use high rejection TFC. Dow Filmtec or better SpectraPure

DI Resin - I personally recommend going all mixed-bed then rotating the DIs as they exhaust. The ratio of cation to anion needs be correct otherwise you may over-deplete or under-utilize your full single bed resins. Go wiuth 3 mixed bed, rotatie as they exhaust (no longer 1ppm TDS) then you will always have good quality pure water