What pollutants does purple air track - more or less than EPA which is limited?

HI anyone have an answer to this?

Hi @Bobcat, PurpleAir sensors measure particulate matter, which are solid and liquid particles suspended in the air. They measure particles from 0.3µ to 10µ in size.

PurpleAir sensors also measure temperature, pressure, and humidity.

​The components that we use can be found here: Our Technology.