Description
10% Crosslinked, NSF 44 Certified for Chlorinated Municipal Water Softening
Overview
Chlorinated municipal water oxidizes standard 8% resin faster than most operators expect. The Franklin FWXC010 is a 10% crosslinked gel-type cation resin engineered to hold up where city water is the feed source. Higher DVB crosslinkage delivers better oxidative resistance, higher exchange capacity (≥2.2 eq/L in Na+ form), and longer service life before the bed needs replacing.
Specifications
| Property | Value |
|---|---|
| Basic Features | |
| Application | Water softening for potable water, foods and beverages |
| Polymer Matrix Structure | Gel polystyrene crosslinked with divinylbenzene (DVB) |
| Crosslinkage | 10% |
| Appearance | Amber, spherical beads |
| Functional Group | Sulphonic acid |
| Ionic Form as Shipped | Na+ or H+ (when ordered as FWXC010) |
| Suggested Operating Conditions | |
| Max Operating Temperature (Na+ form) | 120°C (248°F) |
| Max Operating Temperature (H+ form) | 90°C (194°F) |
| pH Range | 0 to 14 |
| Service Flow Rate | 5 to 50 BV/h |
| Regenerant (Na+ form) | 10 to 15% NaCl |
| Regenerant (H+ form) | 4 to 10% HCl; 1 to 8% H₂SO₄ |
| Physical and Chemical Properties | |
| Total Exchange Capacity, Na+ form (eq/L) | ≥2.2 |
| Total Exchange Capacity, H+ form (eq/L) | ≥2.1 |
| Moisture Retention, Na+ form (%) | 40 to 45 |
| Moisture Retention, H+ form (%) | 42 to 50 |
| Particle Size Range | 0.315 to 1.25 mm (≥95%) |
| Whole Uncracked Beads After Attrition (%) | ≥96 |
| Shipping Weight, Na+ form (g/ml) | 0.80 to 0.88 |
| Shipping Weight, H+ form (g/ml) | 0.75 to 0.85 |
| Specific Gravity (g/ml) | 1.28 to 1.32 |
| Effective Size (mm) | 0.4 to 0.6 |
| Uniformity Coefficient | <1.7 |
| Reversible Swelling, Na+ to H+ (%) | <8 |
| Free Moisture (%) | <2 |
| Extractive Test (Food Grade Resins) | |
| pH, Na+ form | 6.5 to 8.5 |
| Color Throw, 1 hour Na+ form (APHA) | <10 |
| Color Throw, 24 hours Na+ form (APHA) | <30 |
| Color Throw, 1 hour H+ form (APHA) | <30 |
| Color Throw, 24 hours H+ form (APHA) | <50 |
| Odor | 0 to 1 |
| Extractable Residue (%) | <0.1 |
| TOC (mg/l) | 0 to 30 |
| TN (mg/l) | 0 to 15 |
8% vs 10% Crosslink: Which Grade Fits Your Water?
The crosslink percentage determines how tightly the DVB polymer matrix is woven. At 10%, the FWXC010 trades a narrower service flow range for a denser bead that resists oxidative and mechanical breakdown. The practical difference shows up most on chlorinated municipal water, where standard 8% resin degrades noticeably faster. The FWXC008 (8% crosslinked) remains the better fit for unchlorinated sources that need wider flow flexibility.
Choose FWXC010 (10%) when:
- Feed water is chlorinated municipal or city supply
- Resin must last 15+ years without full bed replacement
- Application requires NSF 44 food-grade compliance documentation
- Oxidative or chemical stress is a known factor in the system
Choose FWXC008 (8%) when:
- Feed water is unchlorinated well water or pretreated RO permeate
- Lower media cost per cubic foot is the priority for the project budget
- Initial media cost takes priority over lifecycle cost
- No significant oxidative load on the resin bed
Key Features
- 10% DVB crosslinkage with ≥2.2 eq/L exchange capacity (Na+ form). The denser polymer network packs more active sulphonic acid sites per bead than standard 8% gel resins, delivering higher grain removal per regeneration cycle.
- NSF/ANSI 44 qualified with NSF International Certificate. Full certification, not just material compliance. Compliant with US FDA 21 CFR 173.25 for direct contact with potable water, food, and beverages.
- ≥96% whole uncracked beads after attrition testing. The tighter crosslink structure resists mechanical breakdown during backwash and regeneration, reducing fines generation and bed channeling over the service life.
- Food-grade extractive purity. Color throw under 10 APHA at 1 hour (Na+ form), extractable residue below 0.1%, and TOC within 0 to 30 mg/l confirm minimal leachable contamination into treated water.
- Ships in Na+ or H+ ionic form. Na+ form for softening applications. H+ form for demineralization, dealkalization, and hydrogen-cycle cation exchange. Same resin, two service modes.
Applications
- Municipal and commercial water softening on chlorinated feed water
- Food and beverage process water treatment requiring NSF 44 documentation
- Potable water softening in residential systems on city water
- Pharmaceutical and cosmetic water preparation
- Boiler feed pretreatment where chlorine exposure limits resin life
Buy Franklin FWXC010 Strong Acid Cation Resin Online from Cleanflow
The FWXC010 is part of the Franklin Water Treatment lineup at Cleanflow, which covers softening, demineralization, and specialty media for industrial and commercial water systems across Canada and the U.S.
For systems treating surface water or high-NOM groundwater where organic fouling is the primary concern, the FWXCMP1 macroporous cation resin uses an open-pore structure that sheds organics more effectively than gel-type media. On clean municipal supplies where chlorine resistance and exchange capacity are the deciding factors, the FWXC010 is the straightforward choice.
Cleanflow Utility Supply Company ships across Canada and the USA with free shipping on orders over $199. For returns and exchanges, email info@cleanflow.ca.
Frequently Asked Questions
Is 10% crosslink resin worth the extra cost?
On chlorinated water, yes. A 10% crosslinked resin like the FWXC010 typically costs 15 to 25% more per cubic foot than an 8% equivalent. That premium buys roughly double the chlorine tolerance, which translates to significantly longer bed life on municipal water. Most operators recoup the upfront difference within 3 to 5 years through fewer media change-outs and less downtime. On unchlorinated well water where oxidative stress is minimal, the cost premium offers diminishing returns.
How long does 10% crosslinked resin last?
Service life depends on feed water chemistry, regeneration frequency, and operating conditions. On chlorinated municipal water at typical residual levels (0.5 to 2.0 ppm free chlorine), a 10% crosslinked gel resin can deliver 15 to 20 years of reliable service before capacity drops below acceptable levels. The same resin on unchlorinated water may last even longer. By comparison, standard 8% crosslinked resin on the same chlorinated supply typically shows measurable degradation within 5 to 10 years.
Can I use the FWXC010 in a food processing water softener?
Yes. The FWXC010 carries full NSF/ANSI 44 qualification through NSF International and complies with US FDA 21 CFR 173.25 for contact with potable water, food, and beverages. The spec sheet includes extractive test data specific to food-grade resins, covering color throw, extractable residue, TOC, and odor. These results document that the resin meets purity requirements for food and beverage processing without additional third-party testing.
Does 10% crosslink resin work better on chlorinated water?
It does. Chlorine attacks the polymer backbone of ion exchange resin, breaking crosslinks and degrading bead integrity over time. A 10% DVB crosslink structure has more crosslinks to lose before performance drops, giving it roughly twice the oxidative lifespan of an 8% resin under the same chlorine load. This is the primary reason municipal water treatment operators and system designers specify 10% crosslinked media for city water applications.
What is the difference between 8% and 10% crosslink resin?
The crosslink percentage refers to the proportion of divinylbenzene (DVB) in the copolymer matrix. At 10%, the FWXC010 has a tighter polymer network than the 8% FWXC008, which produces higher exchange capacity (≥2.2 vs ≥2.0 eq/L), better bead strength, and greater chemical resistance. The tradeoff is a 15 to 25% higher cost per cubic foot, which pays back through longer service life on chlorinated water. See the comparison section above for guidance on which grade fits your application.
Manuals & Documentation
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