LEWATIT® UltraPure 1241 MD

Summary

Product Identification

• Product Name: LEWATIT® UltraPure 1241 MD
• Type: Strongly basic, gelular type I anion exchange resin
• Matrix: Styrene-divinylbenzene copolymer
• Particle Size Distribution: Uniform particle bead size (monodisperse)
• Application: Demineralization of water in the production of ultrapure water; recommended for demineralization to ultrapure quality.
• Edition Date: 2018-01-09

Operating Limits

• Operating Temperature: max. 70 °C
• Operating pH Range (during exhaustion): 0-12
• Max. Pressure Loss (during operation): 200 kPa
• Stability pH Range: 0-14
• Storage Temperature Range: -20 - +40 °C

Feed Water

• Bed depth (single column): min. 800 mm
• Backwash Bed Expansion (at 20°C): 11 % per m/h

Product Water

• Ultrapure Water Rinse Test (Resistivity): min. 4 MOhm*cm (after 80 BV rinsing)
• Ultrapure Water Rinse Test (Delta TOC): max. 50 ppb (after 80 BV)

Electrical

• No specific electrical parameters mentioned.

Mechanical / Hydraulic

• Bulk Density (for shipment): 690 g/L (+/- 5%)
• Density (approx.): 1.08 g/mL
• Specific Pressure Loss (at 15°C): 1 kPa*h/m²
• Specific Flow Rate (max.): 60 BV/h

Resin Properties

• Functional Group: Quaternary amine Typ I
• Structure: Gel
• Appearance: Yellow, translucent
• Uniformity Coefficient: max. 1.1
• Mean Bead Size (d50): 0.62 (+-0.05) mm
• Total Capacity (delivery form): min. 1.3 eq/L
• Water Retention (delivery form): approx. 48-55 weight %
• Volume Change (Cl⁻ - OH⁻): max. approx. 24 %

Regeneration

• NaOH Regeneration Concentration: approx. 2-6 wt. %
• NaOH Regeneration Quantity (co-current): min. 80 g/L resin
• NaOH Regeneration Quantity (counter-current): min. 50 g/L resin
• Regeneration Contact Time: min. 20 minutes
• Slow Rinse: min. 2 BV (at regeneration flow rate)
• Fast Rinse: min. 2 BV (at service flow rate)

Storage and Handling

• Storage Time (after delivery): max. 2 years
• Recommended Storage: Above freezing point, under roof, dry, out of direct sunlight.
• Frozen Resin Handling: Allow to thaw gradually at ambient temperature before handling or use.
• Packaging Stability: Limited to 24 months under recommended storage conditions.

Additional Information

• Safety: Avoid contact with strong oxidants (e.g., nitric acid). Observe safety data sheet.
• Disposal: Follow European waste nomenclature.

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