Controlled Atmosphere Storage is an advanced preservation technology that significantly extends the storage life of fruits and vegetables by precisely controlling the temperature, humidity, and gas composition (O₂, CO₂, N₂) in the storage environment.
Principle:
Reducing oxygen concentration and increasing carbon dioxide levels, it inhibits the respiration and ethylene production of fruits and vegetables, delaying the ripening and aging processes.
Key Technical Parameters
|
Gas Composition Control ◄ Oxygen concentration: 1%–5% ◄ Carbon dioxide concentration: 1%–10% ◄ Nitrogen concentration: 85%–98% |
Ambient Temperature ◄ Temperature range: -1°C to +15°C ◄ Relative humidity: 90%–95% ◄ Pressure balance: ±10Pa |
Humidity Requirements ◄ Temperature fluctuation: ±0.5°C ◄ Gas concentration fluctuation: ±0.2% ◄ Humidity fluctuation: ±3% |
Core components of CA storage different from traditional cold room:
| Gas Control System | |
|---|---|
| Nitrogen Generator | Core equipment for reducing oxygen concentration. |
| Ethylene Remover | Catalytically breaks down ethylene gas that accelerates ripening and aging. |
| CO₂ Scrubber | Removes excess CO₂ produced by product respiration. |
| Gas Analyzer & Control System | The "brain" of the system, monitors and controls gas composition in real-time. |
Practical Applications
Maximize Your Produce ROI(Return on Investment):
Investment Highlights:
💡Enable off-season sales
💡Reduced Losses
💡Extend market availability
💡Achieve profitability fast
Traditional Cold Storage vs. CA Storage
(The following data is a comprehensive result based on authoritative industry research and our practical project experience)
| Traditional Cold | CA Storage | ||||||
| Storage Period | 2-8 weeks | 6-12 months | |||||
| Loss Rate | 15-30% | 3-5% | |||||
| Quality Retention | 60-70% | 90-95% | |||||
| Selling Price | Base Price | 20-50% Premium | |||||
6 months CA storage VS 1 month traditional cold room

(This comparison image is intended to visually illustrate the potential advantages of Controlled Atmosphere (CA) preservation technology. The actual storage duration and quality retention effects depend on comprehensive factors such as fruit variety, initial quality, post-harvest handling, and storage management practices. Please refer to actual application results for verification.)
CA Storage Revenue Composition

Price Premium Benefits
✔ Off-season Sales - Capture peak prices during shortages
✔ Quality Premiums - Maintain freshness for premium markets
✔ Brand Value - Build loyalty through consistent supply
Loss Reduction Benefits
✔ Physical Loss
✔ Quality Loss
✔ Transport Loss
Extended Supply Benefits
✔ Capture Market Gaps - Sell when competitors' supplies are depleted, commanding better prices with less competition.
✔ Optimize Sales Strategy - No longer forced to sell during harvest gluts; strategically release inventory to maximize returns throughout the year.
Our engineers have something to say!
✔ Regularly inspect the operating status of key equipment such as the nitrogen generator, carbon dioxide scrubber, and humidifier.
✔ All operators are required to complete dedicated CA room safety training. They must be familiar with the dangers of oxygen-deficient atmospheres and the approved emergency action plans.
✔ Use specialized airtight sleeves and sealant for all wall penetrations. Conduct pressure decay tests to verify integrity.
✔ Pre-cool produce to near storage temperature before loading. This step is a critical prerequisite for successful CA storage.
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