LEWATIT® UltraPure 1297 MD

Summary

Product identification

• Product Name: Lewatit® UltraPure 1297 MD
• Product Type: Ready-to-use mixed bed ion exchange resin.
• Components: Gel type strongly acidic cation exchange resin (SAC) and gel type, strongly basic anion exchange resin (SBA, type I).
• Bead Size Distribution: Monodispersed (uniform particles) based on a styrene-divinylbenzene copolymer.
• Application: Working/regenerable and polishing/non-regenerable systems for ultra-pure water production.
• Key Features: Chemically and osmotically stable beads, optimized kinetics for increased operating capacity, low content of fines for low pressure drop, adjusted to an equivalent ratio of 1:1 (SAC:SBA), smaller SAC bead size for better mixing.
• Regeneration: Highly regenerated and specially cleaned for semiconductor industry specifications.
• Edition: 2020-01-09

Operating limits

• Operating Temperature (max): 60 °C
• Operating pH Range (during exhaustion): 0 - 14
• Maximum Pressure Loss during operation: 200 kPa

Feed water

• Stability pH range: 0 - 14

Product water

• Ultrapure water rinse test (resistivity) after 80 BV: min. 17.5 MOhm*cm
• Ultrapure water rinse test delta TOC after 80 BV: max. 30 ppb

Electrical

• Resistivity (product water after 80 BV): min. 17.5 MOhm*cm

Mechanical / hydraulic

• Specific pressure loss (15°C): 2 kPa*h/m²
• Specific flow rate (max): 100 BV/h
• Bulk density for shipment (+/- 5%): 720 g/L
• Volume change (during exhaustion): max. -20 %

Resin Properties

• Common Description: H⁺/OH⁻
• Functional group: Quaternary ammonium (SBA), Sulfonic acid (SAC)
• Matrix: Styrenic
• Structure: Gel
• Appearance: Dark brown / Light brown translucent
• Uniformity coefficient (SAC component): max. 1.1
• Uniformity coefficient (SBA component): max. 1.1
• Mean bead size (SAC component): 0.35 (+/-0.08) mm (d50)
• Mean bead size (SBA component): 0.64 (+/-0.06) mm (d50)
• Total capacity (SAC component H⁺ form): min. 2.1 eq/L
• Total capacity (SBA component OH⁻ form): min. 1.1 eq/L
• Water retention (SAC component H⁺ form): approx. 35 - 49 weight %
• Water retention (SBA component OH⁻ form): approx. 54 - 64 weight %

Storage

• Storage time (after delivery): max. 1 year
• Storage temperature range: -20 - +40 °C
• Recommended conditions: Store above freezing point of water, under roof, in dry conditions, without direct sunlight. Frozen resin should thaw gradually at ambient temperature before handling or use.

Safety & Disposal

• Safety Precautions: Avoid contact with strong oxidants (e.g., nitric acid). Observe Safety Data Sheet.
• Disposal: Dispose according to European waste nomenclature.

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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