Description
Dow MR-450UPW Ion Exchange Resin | Ultra-High Purity Mixed Bed Polishing Resin
Product Overview
Dow MR-450UPW is an ultra-high purity mixed bed ion exchange resin specifically engineered for the final polishing stage in advanced water purification systems. Designed for industries where water purity is critical, this resin delivers consistent performance to achieve and maintain the stringent water quality standards required in semiconductor manufacturing, pharmaceutical production, and high-purity power generation applications. As a direct successor to the trusted MR-3UPW series, MR-450UPW incorporates enhanced purity and performance characteristics for the most demanding ultrapure water applications.
Core Features
• Exceptional Purity Levels: Manufacturing process minimizes leachable ions and total organic carbon (TOC) to prevent downstream contamination
• Optimized Particle Size Distribution: Uniform bead sizing ensures consistent flow characteristics and maximum exchange efficiency
• Enhanced Kinetic Performance: Rapid ion exchange capability supports high flow rate operation without compromising water quality
• Extended Service Life: Superior physical and chemical stability reduces degradation and extends operational cycles
• Validated Consistency: Batch-to-batch uniformity ensures predictable performance in critical applications
Technical Specifications
|
Parameter
|
Cation Component
|
Anion Component
|
|---|---|---|
|
Resin Type
|
Gel-type Strong Acid Cation
|
Gel-type Strong Base I Anion
|
|
Functional Group
|
Sulfonic Acid (-SO₃H)
|
Quaternary Ammonium (-N⁺(CH₃)₃)
|
|
Ionic Form
|
H⁺
|
OH⁻
|
|
Particle Size
|
0.60-0.75 mm
|
0.60-0.75 mm
|
|
Uniformity Coefficient
|
≤1.1
|
≤1.1
|
|
Total Exchange Capacity
|
≥2.0 eq/L
|
≥1.4 eq/L
|
|
Maximum Operating Temperature
|
150°C
|
60°C
|
|
Moisture Content
|
50-60%
|
55-65%
|
Ultra-Pure Performance Characteristics
• Ionic Purity: Cationic impurities (Na⁺, K⁺) < 5 ppb; Anionic impurities (Cl⁻, SO₄²⁻) < 5 ppb
• TOC Leachables: < 10 ppb
• Silica Leachables: < 5 ppb
• Typical Effluent Resistivity: Capable of achieving >18.2 MΩ·cm
Primary Applications
• Semiconductor Manufacturing: Final polishing for wafer processing, cleaning, and etching applications
• Pharmaceutical Production: Water for Injection (WFI) systems and critical process water polishing
• Microelectronics: Ultra-pure water for printed circuit board manufacturing and component cleaning
• Power Generation: Condensate polishing in nuclear and ultra-supercritical power plants
• Research Laboratories: Analytical instrumentation water supply for HPLC, IC, and LC-MS systems
System Design Considerations
• Pretreatment Requirements: Feed water should be pre-treated to <1 µS/cm conductivity before entering polishing unit
• Vessel Configuration: Typically used in mixed bed configuration with optimized cation-to-anion ratio
• Flow Rate Optimization: Recommended service flow rate: 20-50 BV/h
• Monitoring Parameters: Continuous measurement of resistivity, TOC, and specific ion concentrations
• Exhaustion Indicators: Rising conductivity, decreasing resistivity, or increasing specific ion levels
Operational Guidelines
- Installation: Use ultra-clean handling procedures to prevent contamination
- Startup Protocol: Initial rinse with high-purity water until effluent reaches target specifications
- Continuous Monitoring: Real-time tracking of key water quality parameters
- Regeneration Protocol: Specialized off-site regeneration recommended for optimal performance restoration
- Replacement Indicators: Significant decrease in performance or increase in leachables
Quality Assurance & Traceability
• Manufacturing Standards: Produced under cleanroom conditions with electronic-grade raw materials
• Batch Certification: Comprehensive Certificate of Analysis provided with each batch
• Traceability: Complete documentation from raw materials to finished product
• Performance Validation: Pre-shipment testing to ensure specification compliance
Packaging
• Primary Packaging: Sealed, multi-layer laminated bags
• Secondary Packaging: Clean, sealed fiber drums
• Custom Options: Available in various sizes to meet specific system requirements
• Handling Instructions: Designed to maintain resin purity during storage and transport
Advantages Over Conventional Resins
→ Higher Purity: Reduced leachables minimize downstream contamination risks
→ Better Consistency: Uniform particle distribution ensures predictable performance
→ Extended Life: Enhanced stability reduces replacement frequency
→ Superior Performance: Optimized for the most demanding water purity requirements
→ Technical Support: Backed by Dow’s extensive application expertise
Why Choose Dow MR-450UPW?
For applications where water purity directly impacts product quality, process reliability, and operational success, Dow MR-450UPW provides the assurance needed for critical water purification. Its combination of exceptional purity, consistent performance, and technical support makes it the preferred choice for engineers and plant operators who cannot compromise on water quality. When your process demands the highest standards, MR-450UPW delivers the reliability and performance that Dow Water Solutions is known for worldwide.
Important Considerations
• This resin is designed specifically for polishing applications and requires proper pretreatment
• System design should be validated by qualified water treatment engineers
• Always consult the most current technical data sheet for detailed specifications
• Proper handling and installation procedures are essential to maintain resin purity
• Performance may vary based on specific feed water characteristics and operating conditions
