ro/di carbon blocks: what's the difference?

[pseudorand]

BRS currently has 3 different brands of 1 micron carbon blocks for sale:

1. BRS brand: $18.99
2. CTO: $14.99
3. ChloraGuard: $20.99

Does anyone know enough about RO/DO to explain the difference? I'm not trying to save a few bucks, but I don't just blindly trust that the most expensive one is the best.

Also, the CTO page recommends a 5-micron and then a 1-micron rather than 2x1 micron in 5-stage systems, but the BRS refill kit includes 2x1 micron. The CTO recommendation seems logical, but perhaps that's naive. The BRS kit also has a 1-micro sediment filter for before the carbon blocks, so perhaps that's a factor.

I suppose I generally trust BRS, but I was surprised to see their brand wasn't the cheapest on their own website, as seems to usually be the case. I wonder if they know we all trust them and are capatilizing on that. (Not that they're not entitled to, but I'll do a bit of reading to learn and save a few bucks.)

 

[pseudorand]

Same question for their color-changing DI Resin:

1. Bulk Deionization Resin (Color Changing) : $14.99
2. PRO Series Mixed Bed DI Resin (Color Changing) - Part 3: $16.99
3. Bulk Deionization Resin: $13.49

All are both cation and anion 1.25lb color changing, and all are even BRS-branded. Heck if I can tell the difference other than price.

 

[Malcontent]

Do you have chloramine? If you do you want the BRS block. If not you probably want the BRS block anyway...

 

[KStatefan]

Looking at the specs you can compare the BRS to the Chloragard as both say about the same capacity to remove chloramines. The other does not list chloramine capacity. I would plan for chlormines if your public utilitity is not using them today they might tomorrow .