CZ02 – COVID-19 VIRUS ELIMINATION TEST SUMMARY (HCoV-229E) — RO3E

OH-FEEL CZ SERIES CZ02

Guangdong Detection Center of Microbiology (GDDCM)

Report No.: 2021FM08210R03E

1. Testing Facility Credibility

The Guangdong Detection Center of Microbiology (GDDCM) is a nationally recognized microbiology laboratory in China, frequently used for medical, biodefense, sterilization, and air-disinfection validation.

The laboratory operates under strict national standards and is widely used for virus inactivation and airborne disinfection performance testing.

2. Description of the Test

  • Test Standard: Technical Standard for Disinfection (Ministry of Health P.R. China, 2002), Section 2.1.3
  • Virus: Human Coronavirus HCoV-229E (ATCC VR-740)
  • Host Cell: Vero cells
  • Device Tested: OH-FEEL Hydroxyl Air Protection System (Model CZ02, vehicle / portable)
  • Test Chamber Volume: 1 m³
  • Exposure Time: 2 hours
  • Natural viral decay was mathematically removed from the results

3. Key Results

Initial airborne HCoV-229E concentration: 4.07×10 – 6.76×10 TCID/m³

After 2 hours of OH-FEEL operation:

  • 3.24×10² TCID/m³ (Trial 1)
  • 1.91×10² TCID/m³ (Trial 2)
  • 2.40×10² TCID/m³ (Trial 3)

Viral reduction rate: 99.99% (all trials)

4. Summary Statement

Testing performed by the Guangdong Detection Center of Microbiology confirms that the OH-FEEL CZ02 Hydroxyl Air Protection System achieved a 99.99% reduction of airborne human coronavirus HCoV-229E within a 2-hour exposure period in a sealed 1 m³ viral chamber.

These results demonstrate strong antiviral performance, validating the OH-FEEL system as an effective airborne virus mitigation technology for enclosed vehicle cabins and portable indoor spaces.

Report Issue Date: 2021-06-18

This summary is provided for clarity. Refer to the original COVID-19 (HCoV-229E) laboratory test report for full data and detailed methodology.

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