But isn't the building targeting 'under 1000ppm?' That is the standard, and it's well over the point at which these new studies are noticing mental decline. I

But isn't the building targeting 'under 1000ppm?' That is the standard, and it's well over the point at which these new studies are noticing mental decline. I work in a leed platinum building, and I've been testing the air with 2 different brands of CO2 monitors, and I see them stick to around 850 ppm once everyone is in for the day.