LEWATIT® UltraPure 1261 MD

Summary

Product identification

• Product Name: Lewatit® UltraPure 1261 MD
• Type: Macroporous, strongly basic anion exchange resin (SBA, type I)
• Matrix: Crosslinked polystyrene
• Structure: Macroporous
• Appearance: Beige, opaque
• Functional group: Quaternary amine, type I
• Delivery form: Cl⁻

Operating limits

• Operating temperature: max. 40 °C
• Operating pH-range: 0 - 12
• Pressure drop: max. 300 kPa

Feed water / Product water

• Ultra pure water test delta TOC: max. 50 ppb
• Specific resistivity: min. 4.0 MOhm*cm (as a single component, ca. 80 BV)

Electrical

• Not applicable.

Mechanical / hydraulic

• Uniformity coefficient: max. 1.1
• Mean bead size: 0.65 (+/- 0.05) microns
• Bulk density: 640 g/L (+/- 5 %)
• Density: approx. 1.06 g/ml
• Water retention: 60 - 65 wt. %
• Bed expansion (at 20°C, per m/h): 0 - 14 vol. %
• Storability (of the product): max. 12 years (at < 25°C: -20 - +40 months)

Operating conditions

• Bed depth: min. 800 mm
• Specific pressure drop (15 °C): approx. 0.8 kPa*h/m²
• Linear velocity (Operation): max. 60 m/h
• Linear velocity (Backwash at 20 °C): approx. 5 m/h
• Linear velocity (Rinsing): approx. 5 m/h
• Bed expansion (Backwash at 20 °C, per m/h): approx. 18 vol. %
• Freeboard (Backwash, extern / intern): 100 vol. %

Regeneration

• Regenerant (Counter-current & Co-current): NaOH
• Regenerant Quantity (Counter-current): approx. 50 g/L
• Regenerant Concentration (Counter-current): approx. 2 - 4 wt. %
• Regenerant Quantity (Co-current): approx. 100 g/L
• Regenerant Concentration (Co-current): approx. 3 - 5 wt. %
• Linear velocity (Regeneration, Counter-current): approx. 5 m/h
• Linear velocity (Regeneration, Co-current): approx. 5 m/h
• Rinse water requirement (slow / fast, Counter-current): approx. 2.5 BV
• Rinse water requirement (slow / fast, Co-current): approx. 2.5 / 8 BV

Additional Information

• Safety precautions: Strong oxidants can cause violent reactions. Observe Safety Data Sheet.
• Storage: Recommended above freezing point, dry, under roof, out of direct sunlight. If frozen, thaw gradually at ambient temperature.

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