It aggregates measurements of key pollutants (PM., PM, CO, SO, NO, O) and assigns the highest sub-index as the overall AQI
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Some advanced models also include extra compartments for lighters, cleaning tools , or even built-in grinders
A2: Long-press the OLED touchscreen for two seconds to toggle modes
These observations are consistent with diffusional losses of volatile toxicants through the cigarette wrapper or the split-tipping porous paper gap in the filter
air control for 5 days and washed with PBS 1 h after exposure, with daily changes of serosal media, keeping the cultures sterile for the entire 5 day exposure