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Highly selective for divalent cations such as Ca²⁺ and Mg²⁺, enabling superior hardness removal.
Exceptional chemical and osmotic stability, ensuring long service life in demanding industrial water treatment cycles.
Optimized bead uniformity and narrow particle size distribution for low pressure drop and consistent hydraulic performance.
Regenerable with standard sodium chloride (NaCl) brine, supporting cost-effective and sustainable operation.
Low fines generation and high mechanical strength, minimizing resin loss and maintaining column integrity over time.
Industrial boiler feedwater softening to prevent scale formation and extend equipment lifetime.
Pretreatment for reverse osmosis (RO) and electrodeionization (EDI) systems in high-purity water production.
Food & beverage processing water conditioning where consistent ion control and regulatory compliance are critical.
Pharmaceutical-grade purified water (PW) and water-for-injection (WFI) polishing in GMP-compliant facilities.
Municipal and commercial drinking water softening with reduced salt consumption and wastewater volume.
| Chemical Type | Sulfonated polystyrene-divinylbenzene copolymer (strong acid cation exchanger) |
| Product Form | Moist, spherical beads in Na⁺ form |
| Appearance | Opaque, light amber to brown beads |
| Functional Group | Sulfonic acid (–SO₃H) |
| Ion Exchange Capacity (min.) | 1.8 meq/mL (wet volume basis) |
| Moisture Content | 46–50 % (w/w) |
| Particle Size Range | 0.315–1.25 mm |
| Uniformity Coefficient (max.) | 1.6 |
Q1: What is the primary functional group and ionic form of LEWATIT S 8107?
A: LEWATIT S 8107 is a strongly acidic cation exchange resin based on a sulfonated polystyrene-divinylbenzene matrix, supplied in the sodium (Na⁺) form. It is designed for high-capacity, selective removal of multivalent cations from aqueous solutions.
Q2: In which types of industrial water treatment applications is this resin most commonly deployed?
A: LEWATIT S 8107 is widely used in softening and demineralization systems—particularly where high selectivity for calcium and magnesium over sodium is required, such as in boiler feedwater pretreatment, food-grade process water polishing, and closed-loop cooling water conditioning.
Q3: How does LEWATIT S 8107 differ from standard gel-type strong acid cation resins in terms of physical structure and performance?
A: Unlike conventional gel-type resins, LEWATIT S 8107 features a macroporous structure that provides enhanced kinetic performance, superior mechanical stability under repeated swelling/shrinking cycles, and improved resistance to organic fouling—making it especially suitable for challenging feedwaters with variable quality or trace organics.
Q4: What regeneration protocol is recommended for optimal long-term service life?
A: Regeneration is typically performed using a sodium chloride (NaCl) brine solution at standard concentrations and flow rates compatible with macroporous cation resins. Careful control of rinse efficiency and avoidance of excessive oxidant exposure are advised to preserve crosslinking integrity and exchange capacity over multiple cycles.
Q5: Is LEWATIT S 8107 suitable for use in pharmaceutical or food-contact water systems?
A: Yes—LEWATIT S 8107 is manufactured and tested to meet requirements for use in potable water and food-processing applications, including compliance with relevant global food-grade resin guidelines. End-use suitability should be confirmed through system-specific validation and regulatory review.
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