LEWATIT® A 365

Summary

Product identification

Lewatit® A 365 is a premium food grade, macroporous, weak base anion exchange resin based on a polyacrylate polymer. It offers high operating capacity, good physical stability, and excellent resistance to mechanical osmotic shock. The acrylic matrix provides rapid kinetics for common anions.

Operating limits

• Stability pH range: 0-14
• Stability temperature range: 1-60 °C
• Operating temperature (max): 60 °C
• Operating pH range during exhaustion: 0-8

Feed water

• Recommended for demineralization of high TDS waters, selective sulfate removal, purification of aqueous solutions (including decolorization), and once-through cartridge applications.

Product water

• Not specified.

Electrical

• Not specified.

Mechanical / hydraulic

• Delivery form: Heterodispersed particle size distribution as spherical beads in the fully swollen most free base form.
• Uniformity coefficient (max): 1.8
• Mean bead size (d₅₀): 0.4-1.6 mm
• Effective size (d₁₀) (min): 0.40 mm
• Total capacity (delivery form) (min): 3.4 eq/L
• Bulk density for shipment (+/- 5%): 720 g/L
• Density (approx.): 1.1 g/mL
• Water retention (delivery form) (approx.): 43-54 weight %
• Volume change (free base - Cl⁻) (max approx.): 25 %
• Bed depth for single column (min): 800 mm
• Backwash bed expansion per m/h (20°C): 17 %
• Specific pressure loss (15°C): 1 kPa*h/m²
• Max. pressure loss during operation: 200 kPa
• Specific flow rate (max): 5-30 BV/h
• Freeboard during backwash (min): 80 vol. %

Regeneration

• Regenerant: NaOH (2-5 wt. %) or other weak bases.
• NaOH regeneration quantity (co-current, min): 160 g/L resin
• NaOH regeneration quantity (counter-current, min): 100 g/L resin
• Regeneration contact time (min): 30 minutes
• Slow rinse (at regeneration flow rate, min): 2 BV
• Fast rinse (at service flow rate, min): 4 BV

Storage

• Storage time (after delivery, max): 2 years
• Storage temperature range: -20 - +40 °C
• Recommended storage conditions: Above freezing point of water, under roof, in dry conditions, without direct sunlight.
• Frozen resin: Thaw gradually at ambient temperature; do not mechanically handle.

Additional Information & Regulations

• Safety: Observe safety data sheet. Avoid contact with strong oxidants.
• Disposal: According to European waste nomenclature within the European Community.
• Packaging stability: Limited to 24 months under recommended storage conditions.

Disclaimer: This extraction may miss figures, footnotes, or revisions; contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror