Air Quality and Filtration

ISB continues to invest in the technology and equipment needed to stay at the forefront of evolving requirements for producing safe, healthy, and productive classroom environments.

This past year we made further improvements to ISB’s CleanFlow positive pressure air systems, consistently keeping classroom PM2.5 to near zero levels, exceeding the 2021-updated World Health Organization targets of <5 µg/m3. We continue to comply with the latest Thai Ministry Of Public Health and U.S. CDC core recommendations for viral transmission risk reduction via fresh air ventilation. Additionally, equipment filtration has been upgraded with hospital-grade cartridges EN1882 certified for aerosol removal.

Importantly, this work combines the latest research in improving learning outcomes via controlling classroom carbon dioxide levels. At ISB, we consistently reduce CO2 to the levels shown to produce measurable improvements in cognitive abilities and skills, mathematical and language-based tasks, assessment tests, and exam scores.