{"id":3383,"date":"2026-01-15T09:30:07","date_gmt":"2026-01-15T09:30:07","guid":{"rendered":"https:\/\/ohfeel.gr\/cz2-dokimi-ekpobis-ozontos\/"},"modified":"2026-03-12T11:26:08","modified_gmt":"2026-03-12T11:26:08","slug":"cz2-ozone-concentration-test-summary","status":"publish","type":"page","link":"https:\/\/ohfeel.gr\/en\/cz2-ozone-concentration-test-summary\/","title":{"rendered":"CZ02 -Ozone Concentration Test Summary"},"content":{"rendered":"\t
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CZ02 – Ozone Concentration Test Summary<\/h2>\n

Guangdong Detection Center of Microbiology<\/strong><\/p>\n

Report No.:<\/strong> 2021FM08210R02Da<\/p>\n

1. Testing Facility Credibility<\/h3>\n

The Guangdong Detection Center of Microbiology (GDDCM) is a CNAS-accredited national laboratory recognized for chemical, biological, and air-quality testing.<\/p>\n

The laboratory meets ISO\/IEC 17025 competence standards and is widely used for third-party verification of disinfection and air-purification devices.<\/p>\n

2. Description of the Test<\/h3>\n
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  • Test Standard:<\/strong> HJ 504-2009 (Ozone concentration measurement in sealed test chambers)<\/li>\n
  • Device Tested:<\/strong> OH-FEEL Hydroxyl Air Protection System (Model CZ02)<\/li>\n
  • Sample Quantity:<\/strong> 4 units<\/li>\n
  • Test Chamber Volumes:<\/strong> 1 m\u00b3 and 10 m\u00b3<\/li>\n
  • Exposure Time:<\/strong> 1 hour<\/li>\n
  • Purpose:<\/strong> Measure ozone accumulation in confined environments<\/li>\n<\/ul>\n

    3. Key Results<\/h3>\n

    1 m\u00b3 sealed chamber (1 hour):<\/strong> 0.095 mg\/m\u00b3 (~47.5 ppb)<\/p>\n

    10 m\u00b3 sealed chamber (1 hour):<\/strong> <0.010 mg\/m\u00b3 (<5 ppb)<\/p>\n

    4. Interpretation<\/h3>\n

    The 1 m\u00b3 chamber represents an extreme and unrealistic confinement condition, far smaller than any vehicle, room, or indoor space.<\/p>\n

    Even under this stress test, ozone levels remained near international safety limits.<\/p>\n

    The 10 m\u00b3 chamber result demonstrates safe operation far below the internationally recognized 50 ppb indoor ozone health threshold.<\/p>\n

    5. Summary Statement<\/h3>\n

    Testing confirms that the OH-FEEL CZ02 produces extremely low ozone levels in realistic indoor spaces below 10 m\u00b3.<\/p>\n

    Higher ozone values were observed only under artificially small 1 m\u00b3 stress chamber conditions.<\/p>\n

    These results validate that OH-FEEL portable and vehicle units operate safely within global ozone exposure guidelines.<\/p>\n

    Report Issue Date:<\/strong> 2021-06-18<\/p>\n

    This summary is provided for clarity. Refer to the original ozone concentration test report for full data and detailed methodology.<\/em><\/p>\n<\/div>\n\t\t\n