- Qingqingquan
- Shandong
- 20 days
- 300 units per month
Pharmaceutical & semiconductor-grade DI water systems producing 18 MΩ·cm purity. Chemical-free EDI technology with 90% recovery. Download specs today.
Industrial Deionized Water Systems: 2025 Ultimate Guide
What is Deionized Water?
1. Ultra-Pure Standard: 18.2 MΩ·cm resistivity (0.055 μS/cm)
2. Key Applications:
• Semiconductor manufacturing
• Pharmaceutical WFI production
• Laboratory analytical testing
3. Technology Evolution: From traditional ion exchange to modern RO/EDI hybrid systems
Industry Benchmark: SEMI F63 standard requires <5ppt TOC for chip fabrication
3 Modern DI Production Methods
1. Ion Exchange (Traditional)
• Mixed Bed Resins:
Cation: H⁺ exchange
Anion: OH⁻ exchange
• Limitation: Requires chemical regeneration
2. Reverse Osmosis + DI
• RO Pre-Treatment: Removes 98% ions
• Polish with Mixed Bed: Achieves 15 MΩ·cm
3. EDI (Electrodeionization)
✔ Continuous operation
✔ Zero chemical use
✔ 18 MΩ·cm output
Technical Specifications
| Parameter | Standard DI | RO/DI Hybrid | EDI System |
|---|---|---|---|
| Resistivity | 1-10 MΩ·cm | 10-15 MΩ·cm | 15-18 MΩ·cm |
| TOC | <50ppb | <20ppb | <10ppb |
| Silica | <100ppb | <50ppb | <10ppb |
| Bacteria | <10CFU/ml | <1CFU/ml | <0.1CFU/ml |
Materials: 316L stainless steel, PVDF piping
7 Competitive Advantages
✅ Chemical-free operation (EDI systems)
✅ 24/7 continuous production
✅ 90-95% water recovery
✅ Fully automated controls
✅ Compact modular design
✅ Remote monitoring capability
✅ 10-year membrane lifespan
Industry Applications
1. Semiconductor
• Wafer cleaning (18 MΩ·cm)
• Photolithography processes
2. Pharmaceuticals
• Water for Injection (WFI)
• USP <645> compliance
3. Power Generation
• High-pressure boiler feed
• Turbine cooling water
4. Laboratory
• HPLC mobile phase
• ICP-MS analysis
System Selection Guide
For Electronics Grade
• Configuration: RO + Dual-pass EDI
• Spec: <0.1ppb metals, <5ppt TOC
For Pharmaceutical
• Configuration: RO + Distillation
• Spec: Endotoxin-free WFI
For General Industrial
• Configuration: RO + Mixed Bed
• Spec: 1-10 MΩ·cm
Maintenance Protocol
🔧 Daily: Resistivity monitoring
💧 Weekly: Sanitization cycle
🧪 Monthly: TOC testing
🔄 Annual: Membrane replacement
Pro Tip: Install UV oxidation post-EDI for <5ppb TOC
Free Resources
📥 Download: "DI Water Quality Handbook"
🔬 Get: Free Water Analysis
