ISO 27447:2019

Photocatalysts are composed of semi-conducting metal oxides such as titanium dioxide and zinc oxide. The ISO 27447:2019 standard is designed to determine the anti-bacterial activity of materials containing the photocatalyst or have photocatalytic films on their surface, by enumerating bacteria after exposure to ultraviolet (UV) light. ISO 27447:2019, though intended for use with ceramics, can also be used with other photocatalytic-treated materials such as textiles, glass and plastics.

• Bacteria (Escherichia coli and Staphylococcus aureus) are inoculated onto the test and control materials.
• After a period of UV light exposure, viable bacteria are extracted from the test and control materials and enumerated on a nutrient agar medium.
• The efficacy of the anti-bacterial treatment in response to UV light is calculated by comparing the test and the control materials according to criteria outlined in the standard.
• The antibacterial effect is also assessed in the dark and incorporated into the calculations.
• Other bacteria or fungal species can be used upon request.

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.

We aim to report your results within 3 weeks of sample receipt