RO/DI - Are all equal?

DuPont is one of the biggest chemical companies in the world. My guess is that a lot of the DI resin in the hobby is probably rebranded DuPont resin. They spun off Dow a few years ago, manufacturer of the Dow Filmtec RO membranes.
 
Where are you located? If you are unsure of what resin to get because of the different varieties, why don’t you just buy some bulk mixed bed DI resin from BRS?

* Provided of course that you are in the US. :)
 
I see three different kinds of cation resins. If you were doing a three stage DI setup, you’d use a cation, anion and mixed bed resin in series.

Other than what you posted, do you see any choices for a mixed DI bed resin? My guess is that you’ll be running a single stage DI set up... one canister. For that, you’ll need a mixed bed resin.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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