Crosslink Your Way To Stronger Softener Resin

By: Michael Urbans

Do you know the crosslinking strength of the cation softener resin you are installing?

If yes, then you have been a victim of de-crosslinking and resin oxidation.  But there’s hope!  Not all cation resins are made the same.

Here’s the scoop:

Cation resin is made with a polymer (a fancy plastic). The polymer is what gives the resin bead its structural integrity which is called crosslinking.

Freshly regenerated resin beads swell. Exhausted beads contract.  Lower cross linked resins have higher moisture content.  In the presence of chlorine, resins with higher moisture are more prone to fracture because of the swell/contraction of the regeneration cycle.  The increased moisture allows chlorine to migrate deeper into the bead and over time the resin breaks down and turns to mush.  Higher crosslinked resins are more durable and last longer.

Benefits of higher crosslinked softener resins:

Chlorine is the enemy of ALL ion exchange resins and should be eliminated. But if you can’t, consider a 10% crosslinked resin.  I mentioned a 15% resin.  15% resins are Macroporous.  They are mostly used in specialized industrial applications and can cost 2-3x as much as 8% resin.   If you need the Army Tank of Cation resin, consider a 15%.

To conclude, if you have a non-chlorinated well water and just want to remove some hardness, a 6% will last for years.  However, for just a few bucks more, consider standardizing on 8% resin.  But wait, there’s more!  For a few dollars more, you can buy a 10% resin.  A 10% softener resin will give you a slightly higher capacity and be the most chlorine tolerant.

Urbans Aqua stocks both 8% and 10% softener resin.  It may be time for a resin upgrade. Call us!

Learn more on the Urbans Aqua website: Ion Exchange Resins

For more information about Ion Exchange download this WQA Fact Sheet – Ion Exchange