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Highly uniform spherical beads with narrow particle size distribution for low pressure drop and consistent hydraulic performance.
Strongly basic anion exchange resin in hydroxide (OH⁻) form, optimized for high total exchange capacity and regeneration efficiency.
Exceptional chemical and osmotic stability, enabling reliable long-term operation in demanding demineralization cycles.
Low fines generation and superior mechanical strength reduce resin loss and extend service life in fixed-bed and mixed-bed systems.
Manufactured to strict GMP-relevant quality standards, ensuring batch-to-batch reproducibility and compliance with industrial water treatment requirements.
Final polishing step in high-purity water production for pharmaceutical and biotechnology manufacturing (e.g., WFI and PW systems).
Mixed-bed component for ultrapure water (UPW) generation in semiconductor fabrication facilities.
Removal of trace anionic contaminants (e.g., silica, nitrate, sulfate) in power plant boiler feedwater treatment.
End-stage deionization in laboratory-grade water purification systems requiring low conductivity and minimal TOC leaching.
| Chemical Type | Strongly basic Type I anion exchange resin (quaternary ammonium) |
| Product Form | Hydroxide (OH⁻) form |
| Appearance | Uniform light yellow to amber spherical beads |
| Functional Group | –N(CH₃)₃Cl (converted to –N(CH₃)₃OH) |
| Total Exchange Capacity (dry base) | ≥ 1.25 eq/L (as OH⁻) |
| Moisture Content | 45 – 50 % (as shipped) |
| Particle Size Range | 315 – 1250 µm (≥ 95 %) |
| Uniformity Coefficient | ≤ 1.6 |
Q1: What is the primary functional form of LEWATIT MonoPlus MP 500 OH resin?
A: LEWATIT MonoPlus MP 500 OH is supplied in the hydroxide (OH⁻) ionic form, making it a strong base anion exchange resin optimized for deionization, nitrate removal, and other anion-selective applications in water treatment and process streams.
Q2: Is this resin suitable for pharmaceutical or food-grade water purification?
A: Yes — LEWATIT MonoPlus MP 500 OH is manufactured under stringent quality controls and complies with global regulatory expectations for ion exchange resins used in purified water systems, including those supporting pharmacopeial water specifications. End-use validation remains the responsibility of the system operator.
Q3: How does MP 500 OH differ from conventional gel-type anion resins?
A: MP 500 OH features a macroporous polyacrylate matrix, offering superior physical stability, faster kinetics for large or weakly ionized anions (e.g., silicate, humic substances), and enhanced resistance to organic fouling compared to traditional gel-type resins.
Q4: What regeneration chemicals are recommended for this resin?
A: Sodium hydroxide (NaOH) is the standard regenerant. Typical concentrations range from 2% to 4% w/w, with dosage and contact time adjusted based on service cycle length, influent water quality, and system design.
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E-mail: wangxingqiang@ericwchem.com
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