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Highly uniform spherical beads ensure consistent hydraulic performance and low pressure drop across service cycles.
Optimized macroporous polystyrene-divinylbenzene matrix provides exceptional chemical and osmotic stability in demanding industrial environments.
Superior resistance to organic fouling and chlorine degradation compared to conventional gel-type resins.
Engineered for high selectivity toward divalent cations (e.g., Ca²⁺, Mg²⁺, heavy metals) in complex feedwater matrices.
Regenerable with standard acid solutions (e.g., HCl or H₂SO₄), enabling cost-effective long-term operation.
Ultrapure water production for semiconductor manufacturing and pharmaceutical water systems.
Pre-treatment of boiler feedwater to prevent scaling and corrosion in high-pressure steam generators.
Removal of heavy metal ions (e.g., Cu²⁺, Ni²⁺, Pb²⁺) from industrial process effluents and electroplating rinse streams.
Softening and demineralization in power plant makeup water treatment circuits.
Selective removal of hardness and trace multivalent cations in food & beverage processing water.
| Chemical Type | Strong Acid Cation (SAC), Macroporous |
| Functional Group | Sulfonic acid (–SO₃H) |
| Product Form | Moist, sodium-form beads |
| Appearance | Beige to light brown, spherical beads |
| Particle Size Range | 0.4 – 0.6 mm (95% retained on 0.315 mm sieve) |
| Uniformity Coefficient | ≤ 1.6 |
| Moisture Content | 47 – 53% (as shipped) |
| Ion Exchange Capacity (Na⁺ form) | ≥ 2.0 eq/L (dry base) |
Q1: What is the primary functional group and ionic form of LEWATIT MonoPlus TP 208?
A: LEWATIT MonoPlus TP 208 is a strongly acidic cation exchange resin based on a styrene-divinylbenzene matrix, functionalized with sulfonic acid groups. It is supplied in the sodium (Na⁺) form, enabling efficient removal of multivalent cations such as calcium and magnesium from aqueous streams.
Q2: Is this resin suitable for use in pharmaceutical or food-grade water purification systems?
A: Yes — LEWATIT MonoPlus TP 208 is manufactured and tested to meet stringent quality requirements for use in high-purity water applications. It complies with relevant global regulatory expectations for ion exchange resins used in pharmaceutical water systems (e.g., USP <1231>, EP 2.2.42) and food-contact water treatment, subject to proper system validation and regeneration protocols.
Q3: How does TP 208 differ from standard gel-type strong acid cation resins in terms of performance?
A: TP 208 features a uniform particle size distribution and high chemical stability due to its macroporous structure, offering improved hydraulic performance, faster kinetics for ion exchange, and greater resistance to fouling in challenging feedwaters containing organic matter or suspended solids compared to conventional gel-type resins.
Q4: What regeneration chemicals and typical conditions are recommended for this resin?
A: Sodium chloride (NaCl) brine is the standard regenerant for restoring the Na⁺ form. Regeneration is typically performed at ambient temperature using a 5–10% NaCl solution at controlled flow rates. Acid regeneration (e.g., with HCl) may be applied selectively for deep cleaning or conversion to the H⁺ form, following established safety and compatibility guidelines.
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