OH-Feel 500F08 – OZONE EMISSIONS ANALYSIS SUMMARY

NCSR “Demokritos” — Atmospheric Chemistry & Innovative Technologies Laboratory

1. Testing Facility Credibility

The Atmospheric Chemistry & Innovative Technologies Laboratory of NCSR “Demokritos” is one of Greece’s leading government scientific institutions, internationally recognized for precision ozone measurement, air quality analysis, and atmospheric chemistry.

All measurements were performed using a calibrated Thermo Scientific i49 automatic ozone analyzer in accordance with EN 14625:2012.

2. Description of the Test

  • Standard: EN 14625:2012
  • Device Tested: OH-Feel OH500F08 (KJ488FK08A)
  • Rated Coverage: Up to 60 m²
  • Test Environment: 18 m² sealed room
  • Test Duration: 22 hours continuous operation
  • Pre-test Baseline: 2 hours

The test intentionally used an extremely small, sealed 18 m² room while the OH500F08 is designed for spaces up to 60 m². This created a high-concentration stress test far beyond normal operating conditions, exaggerating ozone levels for safety evaluation. Even under these conditions, ozone remained well within global health limits.

3. Key Results

Initial ozone level (pre-operation): 9.7 ppb

Ozone level during maximum operation: stabilized at 30.5 ppb after 22 hours

Ozone level after device shutdown: 17.7 ppb

4. Safety Interpretation

The globally recognized medical-grade indoor ozone safety limit is 50 ppb (0.050 ppm). This limit is used by U.S. FDA medical device regulations, EU indoor air recommendations, and WHO guidance.

The measured OH-Feel result of 30.5 ppb remains safely below the 50 ppb threshold even under extreme test conditions.

Because the test was performed in an 18 m² sealed room — significantly smaller than the 60 m² rated coverage — real-world ozone levels during normal use will be substantially lower than the measured value.

Report Date: 12/10/2022

Research Director: Dr. T. Maggos

This summary confirms ozone emissions evaluation under EN 14625:2012. It is provided for clarity. Refer to the original test report for full data and detailed methodology.

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