{"id":2929,"date":"2026-01-07T10:28:49","date_gmt":"2026-01-07T10:28:49","guid":{"rendered":"https:\/\/ohfeel.gr\/dokimi-aerometaferomenis-vaktirioktonou-drasis-enanti-e-coli\/"},"modified":"2026-03-12T12:43:07","modified_gmt":"2026-03-12T12:43:07","slug":"dokimi-aerometaferomenis-vaktirioktonou-drasis-enanti-e-coli","status":"publish","type":"page","link":"https:\/\/ohfeel.gr\/en\/dokimi-aerometaferomenis-vaktirioktonou-drasis-enanti-e-coli\/","title":{"rendered":"OH-Feel 500A E.coli Airborne Bactericidal Test"},"content":{"rendered":"\t
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OH-FEEL 500A – E. COLI AIRBORNE BACTERICIDAL TEST<\/h2>\n

SUMMARY<\/strong><\/p>\n

OH-FEEL 500A<\/strong><\/p>\n

Guangdong Detection Center of Microbiology \u2013 GB 21551.3-2010 Appendix A<\/p>\n

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

The Guangdong Detection Center of Microbiology (Gmicro) is a government-operated laboratory with CNAS and ILAC-MRA international accreditation. It is one of China\u2019s leading microbiological testing centers, recognized globally for air purification, antimicrobial, and environmental testing. Its certifications are widely accepted in Europe, Asia, and international product compliance reviews.<\/p>\n

2. Description of Tests Conducted<\/h3>\n

Testing followed GB 21551.3-2010 Appendix A for evaluating bactericidal performance of air-cleaning devices. The test organism was Escherichia coli (strain 8099).<\/p>\n

A 30 m\u00b3 chamber was conditioned, and the OH-Feel Hydroxyl Air Protection System was operated at maximum airflow (\u201c0H1, 0H2\u201d modes) for 2 hours. Air samples were collected using a JWL-6 six-stage microbial air impact sampler at 28.3 L\/min. Control samples were collected for 1 minute, while test samples were taken for 5 minutes.<\/p>\n

Natural microbial decay was mathematically removed to ensure that all reductions observed were caused solely by the OH-Feel device.<\/p>\n

3. Summary of Test Findings<\/h3>\n

Initial Airborne E. coli Concentration (0h control):<\/strong><\/p>\n

    \n
  • 9.9 \u00d7 104<\/sup> cfu\/m\u00b3<\/li>\n
  • 9.3 \u00d7 104<\/sup> cfu\/m\u00b3<\/li>\n
  • 9.7 \u00d7 104<\/sup> cfu\/m\u00b3<\/li>\n<\/ul>\n

    After 2 Hours of OH-Feel Operation:<\/strong><\/p>\n

      \n
    • 8.2 \u00d7 102<\/sup> cfu\/m\u00b3 \u2192 97.95% reduction<\/li>\n
    • 9.6 \u00d7 102<\/sup> cfu\/m\u00b3 \u2192 97.33% reduction<\/li>\n
    • 8.5 \u00d7 102<\/sup> cfu\/m\u00b3 \u2192 98.09% reduction<\/li>\n<\/ul>\n

      Average Sterilization Rate:<\/strong> 97.79%<\/p>\n

      4. Summary Statement<\/h3>\n

      These results confirm that the OH-Feel Hydroxyl Air Protection System delivered significant airborne bactericidal performance in a controlled 30 m\u00b3 environment, achieving nearly complete removal of E. coli within a 2-hour treatment window.<\/p>\n

      Report Number:<\/strong> 2020FM06362R02D<\/p>\n

      Issue Date:<\/strong> 2020-05-07<\/p>\n

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

      This summary confirms airborne E. coli sterilization testing under GB 21551.3-2010 Appendix A. This summary is provided for clarity. Refer to the original test report for full data and methodology.<\/em><\/p>\n<\/div>\n\t\t\n