Joseph Sabol Indoor Air Quality Resources

Indoor Air Quality

Ensure the ventilation on trains and busses is operating. We cannot have > 1,000 ppm CO2 except for brief periods. Increase air exchange and use MERV 13 filters. Avoid VOCs (volatile organic compounds) and particulates less than 2.5 um (PM2.5).

See: PURPLE AIR closed circles are indoors and open disks are outdoors



Details on 1) indoor air quality, 2) methane, 3) carbon dioxide, 4) misleading information, and 5) SARS-CoV-2 and COVID-19 Resources.