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Highly selective for multivalent cations including Ca²⁺, Mg²⁺, and heavy metals in low-conductivity water streams.
Optimized macroporous structure providing excellent kinetic performance and resistance to fouling from organic contaminants.
Superior physical and chemical stability across wide pH range (0–14) and operating temperatures up to 120 °C.
Low osmotic swelling behavior ensures consistent bed volume and pressure drop during cyclic operation.
Manufactured to strict pharmaceutical-grade quality standards with full traceability and compliance to USP <841> and EP 2.2.39.
Ultrapure water (UPW) polishing in semiconductor manufacturing facilities.
Final polishing step in pharmaceutical water systems (PW, WFI, and UPW).
Removal of trace metal ions from process streams in biotechnology upstream and downstream processing.
Deionization of low-TDS feedwaters in laboratory and analytical instrument water systems.
Targeted removal of divalent cations in high-purity steam generation for power and nuclear applications.
| Chemical Type | Macroporous strong acid cation exchange resin (sulfonated polystyrene-divinylbenzene) |
| Product Form | Moist, spherical beads |
| Appearance | Opaque beige to light brown beads |
| Functional Group | Sulfonic acid (–SO₃H) |
| Ion Form | H⁺ form (ready-to-use) |
| Particle Size Range | 300–1200 µm (≥95% retained on 16 mesh, ≤5% on 50 mesh) |
| Moisture Content | 47–53% (as supplied) |
| Maximum Operating Temperature | 120 °C |
Q1: What is the primary functional group and ionic form of LEWATIT UP 1241 MDC?
A: LEWATIT UP 1241 MDC is a strongly acidic cation exchange resin in the hydrogen form, featuring sulfonic acid functional groups grafted onto a highly crosslinked polystyrene-divinylbenzene matrix. Its design emphasizes high chemical stability and low extractables for ultra-pure water applications.
Q2: Is this resin suitable for pharmaceutical-grade water polishing systems?
A: Yes — LEWATIT UP 1241 MDC is specifically engineered for final polishing in high-purity water systems, including those supporting pharmaceutical manufacturing. It meets stringent requirements for low TOC release, minimal particle shedding, and compliance with relevant pharmacopoeial guidelines for ion exchange resins used in water purification.
Q3: How does LEWATIT UP 1241 MDC differ from standard gel-type strong acid cation resins?
A: Unlike conventional gel-type resins, UP 1241 MDC features a macroporous structure with controlled pore size distribution and enhanced mechanical strength. This provides superior resistance to osmotic shock, improved regeneration efficiency, and reduced pressure drop in high-flow, continuous-operation systems typical of ultrapure water installations.
Q4: Can this resin be used in mixed-bed configurations with anion exchange resins?
A: Yes — LEWATIT UP 1241 MDC is fully compatible with high-performance anion exchange resins (e.g., LEWATIT MP 64 or MONOPOL SA) in mixed-bed units. Its uniform spherical morphology and optimized density facilitate effective separation during backwashing and ensure stable long-term performance in mixed-bed deionization.
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