ISO 27447:2019

Test method for antibacterial activity of photocatalytic materials

The ISO 27447:2019 standard outlines a test method to determine the antibacterial activity of materials containing a photocatalyst or with photocatalytic films on the surface, by enumerating bacteria after exposure to ultraviolet (UV) light. ISO 27447:2019 applies to the testing of photocatalytic ceramics and other non-porous photocatalytic-treated materials such as textiles, glass and plastics.

Test Description

  • Bacteria (Escherichia coli or Staphylococcus aureus) are inoculated onto the test and control surfaces. Other bacteria strains can be requested.
  • The samples are exposed to UV light for a set duration, after which viable bacteria are extracted from the test and control materials and enumerated.
  • The antibacterial activity of the photocatalyst after UV irradiation is calculated according to criteria in the standard.
  • The antibacterial effect is also assessed in the dark and incorporated into the calculations.

Sample Submission

Identify the number of samples you wish to test and we will provide you with a quote. Upon receipt of samples and payment we will test the samples in accordance to the standard and provide a report of the results.

Turnaround Time

We aim to report your results within 4 weeks of receiving samples.

Third Party Validation

On passing this test, the product can be labelled as having been tested by airmid healthgroup to ISO 27447:2019 in support of any claim relating to the test and data received.


“The quality of the third party data we received from airmid healthgroup helped us showcase our innovative strategy of licensing this novel technology at a prestigious international scientific event, the European Innovation Convention. Ultimately this will allow us add value and differentiate our customer offerings through a focus on health and indoor air quality.”
Mr. Robert Hickson, MD of VitrA Ireland


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