NBN ISO 17721-1:2022

This document specifies test methods for evaluating the antibacterial activity of glazed and unglazed
ceramic tile surfaces with incorporated antibacterial agents.
Secondary effects on ceramic tile surfaces due to antibacterial treatments, such as changes in chemical
resistance, stain resistance or small colour differences, are not covered by this document. For chemical
resistance refer to ISO 10545-13, for stain resistance refer to ISO 10545-14 and for colour differences
refer to ISO 10545-16.
Any results obtained with this document will always refer to this document and the conditions used.
Results obtained with this document indicate antibacterial activity under the specified experimental
conditions used herein, and do not reflect activity under other circumstances where a variety of factors,
such as temperature, humidity, different bacterial species, nutrient conditions, etc., are considered.