Ion exchange resin(di)

[boxfishpooalot]

What is the difference? I found this and wondering what the heck? Whats a good di resin?

"Cations are replaced with hydrogen ions using cation exchange resins; anions are replaced with hydroxyls using anion exchange resins"

So then I thought well, what is a good mix of resin? Whats good for phosphates?

Then I discoverd that they are ion exchange resins, swapping ions for another, like adding sodium to the water and potassium. And reefers worry about potassium.....

Help me im lost!

I need to buy some di and dont know what and wich.

 

[AZDesertRat]

Stick with a known vendor like the sponsors here on RC. There are literally hundreds of different resins and thousands of blends of each. Cation/Anion mixed bed blends are not a 50/50 mix, you will never see a half and half mixture. By the same token if you buy bulk resin you will not want to have one canister of cation and one of anion in almost all cases.
I use nothing but Spectrapure resins myself. They have been in the RO/DI business exclusively for almost 25 years and have done more research on what works and what does not than all other vendors combined and then some. No one has the engineering staff and test facilities like they do and they don't put anything on the markey unless it has been exhaustively researched and beta tested in the field. Their MaxCap and SilicaBuster resins are one of a kind and no one can touch their performance. I got 630 documented gallons out of my first MaxCap cartridge when I had previously been getting 150 gallons out of every other factory fresh, name brand resin I tried. Thats quite a difference.

 

[boxfishpooalot]

What about this purolite bulk stuff? I need a high affinity towards phosphate. Silicate are non existant in my tap water, well nearly. Besides silca gets used up very quickly. Randy shows this

http://www.twopartsolution.com/index.php?main_page=products_new

 

[AZDesertRat]

Silicates, phosphates, arsenic and nitrates are almost identical when it comes to ionization and DI resins. They all are treated about the same. SilicaBuster is probably your best choice.

 

[boxfishpooalot]

Thanks.

Whats the ion exchange resin actually putting back into the water? Is it just sodium and potassium? What else?

Man ro/di so complicated and sophisticated. Why when distilled is so much more natural and easyily understood. :lol:

O yea and I need a tds meter. Want the best! Wich?

O I just thought about somthing. What if di removes Co2? Does it? If so then recirculating di would exhast?

 

[tgunn]

<a href=showthread.php?s=&postid=10005178#post10005178 target=_blank>Originally posted</a> by boxfishpooalot
Thanks.

Whats the ion exchange resin actually putting back into the water? Is it just sodium and potassium? What else?

Man ro/di so complicated and sophisticated. Why when distilled is so much more natural and easyily understood. :lol:

O yea and I need a tds meter. Want the best! Wich?

O I just thought about somthing. What if di removes Co2? Does it? If so then recirculating di would exhast?

Get one of those dual in-line TDS meters, like this one from J&L.. I have a cheap $25 Milwaukee handheld. It works okay, but being that it is not plumbed in, reading my TDS is something I don't do as often as I should.

Tyler

 

[AZDesertRat]

The absolute best hobbyist grade TDS meter is the handheld HM Digital COM-100. It should be $50 or less most anywhere. It is much more accurate than anything else available due to the different ways it can be calibrated and read. Nothing touches it for low end sensitivity and accuracy.
Inline meters should be used as rough guides only. They are not truly temperature compensated and if your water and air temperatures are not EXACTLY the same they can be significantly off. I use two of them and they never agree with a handheld.

 

[boxfishpooalot]

Hmm Ill have to get both then. The inline and the hand held. 100 bucks is pennys in this hobby.

Does Randy have a link about what exactly ion exchange resins(di) are doing to water? I dont think he wrote anything about it.

Where is Boomer when you need him? :lol:

 

[Icefire]

Cations are replaced with hydrogen ions using cation exchange resins; anions are replaced with hydroxyls using anion exchange resins. The hydrogen ions and hydroxyls recombine producing water molecules.

http://en.wikipedia.org/wiki/Ion-exchange_resin