🌊 Product Overview
The LiquaGen 4.5” x 20” Mixed Bed DI Resin – Non-Color Changing, Spot-Free Washing Cartridge is the largest and highest-capacity cartridge in our DI lineup, designed to deliver 0 TDS water for spot-free washing and pure water applications. Filled with premium mixed bed (anion + cation) resin, it eliminates all dissolved solids to produce ultra-pure, mineral-free water.
Built for Big Blue 4.5" x 20” housings, this refillable cartridge provides maximum resin volume, extended service life, and higher flow rates, making it the best choice for whole-house systems, professional car detailers, aquarium enthusiasts, and RO polishing applications.
✨ Key Benefits & Features
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🚗 Spot-Free Cleaning – Perfect for professional car washing and window cleaning.
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💧 0 TDS Water – Produces ultra-pure water free of all dissolved minerals.
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🐠 Aquarium Safe – Maintains water quality for marine, reef, and freshwater systems.
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🔧 Big Blue 20” Fit – Compatible with all standard 4.5” x 20” Big Blue housings.
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♻️ Refillable Cartridge – Economical—replace the resin when exhausted, not the cartridge.
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🌱 Mixed Bed Resin – Balanced blend of anion and cation resins ensures complete deionization.
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⏱️ Extended Capacity – Provides the longest service life and highest output of all DI cartridge sizes.
📋 Technical Specifications
| Parameter | Details |
|---|---|
| Model | LiquaGen 4.5” x 20” Mixed Bed DI Resin Cartridge |
| Size | 4.5” x 20” (Big Blue Cartridge) |
| Media Type | Mixed Bed (Anion + Cation) DI Resin |
| Resin Type | Non-Color Changing |
| Primary Functions | Removes all dissolved solids (0 TDS) for spot-free water |
| Capacity | Largest resin volume, ideal for heavy-use applications |
| Recommended Lifespan | Replace resin once TDS output rises above 0 |
| Max Pressure | 90 PSI (6.2 bar) |
| Operating Temp. | 40–100°F (4.4–37°C) |
| Housing Compatibility | Fits all standard 4.5" x 20” Big Blue filter housings |
🏠 Applications
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🚘 Car Washing – Spot-free rinses for professional detailers and auto enthusiasts.
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🪟 Window Cleaning – Crystal-clear glass results for residential and commercial use.
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🐟 Aquariums & Reef Tanks – Produces pure, mineral-free water for sensitive aquatic environments.
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🧪 RO System Polishing – Acts as a final stage for true zero TDS water output.
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🏠 Whole-House & High-Demand Use – Perfect for households and businesses that need continuous pure water supply.
💙 Why Choose LiquaGen?
The LiquaGen 4.5” x 20” Mixed Bed DI Resin – Non-Color Changing, Spot-Free Washing Cartridge delivers the highest capacity, flow rate, and service life of any DI resin cartridge in our lineup. Whether for professional detailing, aquariums, or whole-house spot-free applications, this cartridge ensures consistent 0 TDS performance and unbeatable purity.