“INDION 220 Na – premium-grade strong acid cation exchange resin in sodium form for high-capacity water softening and hardness removal.”
Description
INDION 220 Na is a high-performance strong acid cation exchange resin supplied in the sodium (Na⁺) form, specially designed for industrial and domestic water softening applications. It effectively removes hardness-causing calcium and magnesium ions, replacing them with sodium ions to deliver soft, scale-free water for various uses.
This resin is made from high-quality polystyrene crosslinked with divinylbenzene, ensuring high exchange capacity, excellent bead strength, and long operational life. Its superior mechanical and osmotic stability makes it ideal for continuous use in both upflow and downflow regeneration systems.
Key Features:
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High Capacity: Provides longer service runs between regenerations.
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Strong Mechanical Stability: Resistant to breakage and attrition.
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Fast Kinetics: Quick softening and regeneration cycles.
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Wide pH Range: Operates effectively between pH 0 and 14.
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Thermal Resistance: Suitable for operation up to 120°C in sodium form.
Applications:
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Industrial water softening plants
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Domestic water softeners
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Boiler feed water treatment
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Cooling tower make-up water softening
Typical Physical & Chemical Properties:
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Type: Strong Acid Cation Exchange Resin (Gel Type)
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Ionic Form: Sodium (Na⁺)
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Total Exchange Capacity: ~2.0 meq/mL (minimum)
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Moisture Content: 40 – 48%
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Particle Size Range: 0.3 – 1.2 mm
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Operating pH Range: 0 – 14
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Maximum Operating Temperature: 120°C
INDION 220 Na offers consistent performance, long service life, and reduced operating costs, making it an excellent choice for all water softening needs in residential, commercial, and industrial sectors.
Technical Specifications
Technical Specifications – INDION 220 Na (Water Softening Resin)
| Parameter | Specification |
|---|---|
| Product Type | Strong Acid Cation Exchange Resin (Gel Type) |
| Ionic Form | Sodium (Na⁺) Form |
| Matrix | Polystyrene crosslinked with Divinylbenzene |
| Appearance | Golden Amber Spherical Beads |
| Total Exchange Capacity | ≥ 2.0 meq/mL of resin |
| Moisture Content | 40 – 48% |
| Particle Size Range | 0.3 – 1.2 mm |
| Uniformity Coefficient | ≤ 1.7 |
| Operating pH Range | 0 – 14 |
| Regeneration | Sodium Chloride (NaCl) Solution |
| Maximum Operating Temperature | 120°C in Na⁺ form |
| Bulk Density | 780 – 800 g/L |
| Specific Gravity | 1.25 – 1.29 |
| Shipping Form | Moist, in Na⁺ form |
| Applications | Industrial & domestic water softening, boiler feed water, cooling tower make-up water |
| Standards | Conforms to NSF/ANSI-61, ISO 9001 Certified |
FAQs
Q1: What is INDION 220 Na resin used for?
A: INDION 220 Na is a strong acid cation exchange resin in sodium form, designed for water softening. It removes hardness-causing calcium and magnesium ions, replacing them with sodium ions to provide soft water for industrial, commercial, and domestic applications.
Q2: How is INDION 220 Na different from INDION 225 Na?
A: Both are strong acid cation resins in sodium form, but INDION 220 Na generally offers a slightly higher exchange capacity and is preferred for high-demand industrial softening applications, while INDION 225 Na is widely used in domestic and medium industrial systems.
Q3: How often should the resin be regenerated?
A: Regeneration is required when the resin’s ion exchange capacity drops — typically after a set volume of water has been treated. The frequency depends on feed water hardness, flow rate, and softener size, and is done using a sodium chloride (NaCl) brine solution.
Q4: What is the service life of INDION 220 Na resin?
A: With proper operation, regular regeneration, and good feed water pre-treatment, INDION 220 Na can last 5–7 years in most applications. Lifespan may vary depending on operating conditions and water quality.
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