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High-capacity, macroporous strong acid cation exchange resin in calcium form.
Optimized for high selectivity and efficient removal of multivalent cations (e.g., Ca²⁺, Mg²⁺, heavy metals).
Excellent physical and chemical stability under repeated regeneration cycles and varying pH conditions.
Low osmotic swelling and superior mechanical strength, minimizing bed compaction and pressure drop in service.
Consistent bead uniformity and narrow particle size distribution for predictable hydraulic performance.
Pre-treatment of industrial boiler feed water to prevent scale formation.
Softening of process water in food & beverage and pharmaceutical manufacturing.
Removal of hardness ions and trace metal contaminants from municipal drinking water.
Regenerable polishing step in ultrapure water (UPW) systems for semiconductor production.
Recovery and concentration of valuable metal ions in hydrometallurgical effluent streams.
| Chemical Type | Macroporous sulfonated polystyrene-divinylbenzene copolymer |
| Product Form | Calcium form (Ca²⁺), ready-to-use |
| Appearance | Uniform spherical beads, light beige to amber color |
| Functional Group | Sulfonic acid (–SO₃H) |
| Ionic Form | Ca²⁺ (pre-charged, fully converted) |
| Moisture Content | 45–52 % (w/w, as shipped) |
| Particle Size Range | 0.45–0.75 mm (≥95 %) |
| Uniformity Coefficient | ≤1.5 |
Q1: What is the primary functional form of LEWATIT MDS 1368 Ca 290?
A: LEWATIT MDS 1368 Ca 290 is supplied in the calcium (Ca²⁺) form, optimized for selective removal of multivalent cations such as heavy metals and hardness ions from aqueous streams.
Q2: Is this resin suitable for potable water treatment applications?
A: Yes — when regenerated and operated in accordance with local drinking water regulations, LEWATIT MDS 1368 Ca 290 is commonly used in municipal and point-of-use systems for targeted softening and trace metal reduction, provided system design includes appropriate pre-filtration and regeneration protocols.
Q3: How does MDS 1368 Ca 290 differ from standard gel-type cation resins?
A: It features a macroporous matrix with high physical stability and low pressure drop, offering superior kinetic performance and resistance to fouling in challenging feedwaters containing organic matter or suspended solids compared to conventional gel-based resins.
Q4: Can this resin be regenerated, and what are typical regenerants?
A: Yes — it is fully regenerable using common inorganic salts such as sodium chloride (NaCl) or calcium chloride (CaCl₂), depending on the target ion recovery strategy and process requirements. Regeneration efficiency depends on flow rate, concentration, and contact time.
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