CADR (CLEAN AIR DELIVERY RATE) PERFORMANCE TEST SUMMARY
OH-FEEL 500A
Guangdong Detection Center of Microbiology – Air Purification Testing
1. Testing Facility Credibility
The Guangdong Detection Center of Microbiology (Gmicro) is one of China’s leading government-backed bio-environmental laboratories and operates under CNAS and ILAC-MRA international accreditation. Its test data is accepted globally for product certification, import/export compliance, and performance verification. Gmicro specializes in microbiology, environmental air quality testing, particulate analysis, and national air-cleaner performance standards, making it a highly authoritative body for CADR evaluation.
2. Description of Tests Conducted
Testing followed the national air purifier performance standard GB/T 18801-2015. A 30 m³ controlled chamber was conditioned to 24.9°C and 59% relative humidity. A standardized aerosol particulate load was introduced, and the decay rate of airborne particles was measured over time.
CADR (Clean Air Delivery Rate) was calculated using the official decay curve formula based on repeated air sample readings taken at intervals throughout a 20-minute test cycle. This test method determines how quickly the device reduces particulate matter and is the primary recognized metric for evaluating real-world air cleaning performance.
3. Summary of Test Findings
The tested OH-Feel unit demonstrated effective particulate reduction inside the 30 m³ chamber. The concentration of particles decreased steadily during the test window, confirming active particulate removal consistent with measurable CADR performance.
Under these conditions, the measured particulate CADR was approximately 288 m³/h, indicating a strong clean air delivery capability for the unit.
Readings documented in report 2018FM12290R03 verify the device’s ability to accelerate removal of airborne particles versus natural sedimentation.
This summary confirms CADR performance evaluation under GB/T 18801-2015. This summary is provided for clarity. Refer to the original test report for full data and methodology.