anionic resin Purolite A400. What means chloride form ?

[Charles Silva]

Hello

I was reading the anionic Purolite A400 resin data sheet and I noticed that it is supplied in the chloride (salt-exhausted) form and it is also avaliable in the hydroxide (regerenated) form as A400OH.

I didn't find in this document if the A400 must be activated before using. I heard from a LFS that it must be activated with NaOH solution before using.

I will use in a separated chamber after a cationic resin (C100) and at the end the water pass through a mixed resin chamber (MB400).


I'm curious to understand why the anionic resin has this chloride and hydroxide form and if it must be activated before using.

Thanks
Charles Silva
Rio de Janeiro - Brazil

 

[Randy Holmes-Farley Verified Community Expert]

Yes, an ion exchange resin used for ro/ di. MUST be in the hydroxide firm to work properly.

I describe how these resins work and hence why it needs to be the hydroxide form here:

http://reefkeeping.com/issues/2005-05/rhf/index.htm

 

[Charles Silva]

Thanks @Randy Holmes-Farley

If I soak this anion chloride form resin in a solution with NaOH before I use then rinse it will be ready to use ?

Why the anion resin is sold in a chloride form and not in OH ?

In March I loaded my filters as describled
below and I was getting a high TDS. Do you think the reason could be the anionic resin not in OH form ?

High TDS after separated cationic and anionic resin

Hello all I replaced my filtration system resins (cationic and anionic) and I´m getting high TDS values. Here is the configuration: 1- 2.5"x 10" 20 micron sediment filter 2- 2.5"x 10" 5 micron sediment filter 3- 2.5"x 10" carbon block filter 5 micron 4- 2.5"x 10" 1 micron sediment...

www.reef2reef.com

Thanks
CHArles