Ventilation in my lab yesterday. Maintained 22.9 #ACH 2nd hour. First hour 9.88 ACH (air changes per hour).
24 students + 1 instructor in a 450 m³ room.
Pre-occupancy CO₂: 538 ppm
First hour average peak: 615 ppm
Second hour: 585 ppm
See tinyurl.com/ACHcalc1
#Aranet4 #SAFEindoorAir #SchoolCO2

Granite School District spent $86K of COVID funds to attend a conference in Las Vegas Thousands of dollars of COVID relief funds were used by a Utah school district for a conference in Las Vegas.

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The Granite Schools have now upgraded every single classroom with proper ventilation, filtration, & installed #FARUV. With $86K left over, they decided to celebrate in #Vegas.

#CovidCO2 #Aranet4 #UV222 #SchoolCO2

@1goodtern.bsky.social

@lieslmcconchie.bsky.social

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