The antibacterial performance testing of materials used in urban outdoor furniture requires strict environmental control, particularly regarding humidity levels. Proper humidity management is crucial because microbial growth and activity – which these tests aim to evaluate – are directly influenced by moisture availability. Most standardized testing protocols, such as ISO 22196 and JIS Z 2801, specify maintaining a relative humidity of 90% or above at a constant temperature of 35°C ± 1°C. This high-humidity environment creates optimal conditions for bacterial survival and proliferation, ensuring that the test challenges the material's antibacterial properties effectively. Without this controlled humid environment, test results can become unreliable, failing to accurately represent how the material will perform in real-world conditions where moisture from rain, dew, or humidity is prevalent. Maintaining these precise conditions requires specialized environmental chambers, making humidity control a fundamental aspect of valid and standardized antibacterial efficacy testing for outdoor applications.
What are the environmental humidity requirements for the material antibacterial performance test of urban outdoor furniture?
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