Field Testing
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CO2 Readings Guideline *
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* Readings to the exclusion of other CO2 sources
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CO2 Readings Guideline *
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* Readings to the exclusion of other CO2 sources
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Reading: 393 ppm
Occupancy: Low
This hotel takes ventilation as seriously as we’ve seen from any hospitality property. We could hear the HVAC humming in the background.
Ventilation is going to be the new USP of the hospitality industry.
🟢 350 – 412 ppm = outdoor air level
Reading: 376 ppm
Occupancy: Medium
Indoor spaces with unmasked patrons are generally considered as high risk . The risk increases in the absence of ventilation and filtration.
✓ The doors and windows were fully open .
🟢 350 – 412 ppm = outdoor air level
Occupancy: Medium – High
⚠️ In person shopping?
Readings from our time in the store.
❌ HVAC system visible and operational?
Would you want to inhale 1% of the air, which had passed from other shoppers?
🔴 800 ppm = 1% rebreathed air rate.
Reading: 393 ppm
Occupancy: Low
This hotel takes ventilation as seriously as we’ve seen from any hospitality property. We could hear the HVAC humming in the background.
Ventilation is going to be the new USP of the hospitality industry.
🟢 350 – 412 ppm = outdoor air level
Reading: 376 ppm
Occupancy: Medium
Indoor spaces with unmasked patrons are generally considered as high risk . The risk increases in the absence of ventilation and filtration.
✓ The doors and windows were fully open .
🟢 350 – 412 ppm = outdoor air level
Occupancy: Medium – High
⚠️ In person shopping?
Readings from our time in the store.
❌ HVAC system visible and operational?
Would you want to inhale 1% of the air, which had passed from other shoppers?
🔴 800 ppm = 1% rebreathed air rate.
Reading: 2549 ppm
Occupancy: High
School classes at full capacity , with limited social distancing and poor ventilation, increases exposure risk.
🔴 2549 ppm = 5% rebreathed air rate
🔴 Did you know at 1500 ppm there is a 50% cognitive decline?
Does your school have a ventilation policy?
Reading: 1072
Occupancy: Low (at the time of visit)
Public restrooms with multiple users , unknown health status and coupled with poor ventilation is considered a high risk space.
⚠️ Avoid removing your mask in public restrooms even if you are the only person . Aerosols emitted by others can linger in the space for hours, in poorly ventilated spaces.
🔴 1200 ppm = 2% rebreathed air rate
Reading: 1338 ppm
Occupancy: Single rider
⚠️ The reading was at an alarming level on entry. Windows were partially opened. Once the window was opened fully, CO2 levels gradually dropped below 700 ppm. Without the CO2 device one would be ignorant of the escalating risk.
How many patrons are unaware of their exposure risk on their daily commute?
🔴 1786 ppm = 3% rebreathed air rate
Reading: 2549 ppm
Occupancy: High
School classes at full capacity , with limited social distancing and poor ventilation, increases exposure risk.
🔴 2549 ppm = 5% rebreathed air rate
🔴 Did you know at 1500 ppm there is a 50% cognitive decline?
Does your school have a ventilation policy?
Reading: 1072
Occupancy: Low (at the time of visit)
Public restrooms with multiple users , unknown health status and coupled with poor ventilation is considered a high risk space.
⚠️ Avoid removing your mask in public restrooms even if you are the only person . Aerosols emitted by others can linger in the space for hours, in poorly ventilated spaces.
🔴 1200 ppm = 2% rebreathed air rate
Reading: 1338 ppm
Occupancy: Single rider
⚠️ The reading was at an alarming level on entry. Windows were partially opened. Once the window was opened fully, CO2 levels gradually dropped below 700 ppm. Without the CO2 device one would be ignorant of the escalating risk.
How many patrons are unaware of their exposure risk on their daily commute?
🔴 1786 ppm = 3% rebreathed air rate
Occupancy: Medium
⚠️ Waiting rooms , with potentially ill or infectious persons, for short to extended periods are a potentially high risk exposure location.
🔴 1338 ppm = 3% rebreathed air rate
In such spaces , ventilation should be combined with filtration* (* ie a mobile air purifier fitted with a HEPA filter)
Occupancy: Medium – High
⚠️ How safe is public transport?
Given the daily volume of passengers and frequency of use; ventilation guidelines should be designed to significantly reduce the risk of exposure?
🔴 906 ppm = 1% rebreathed air rate captured during non peak hours.
Occupancy: Medium – High
⚠️ How safe is your gym? ⚠️ Indoor spaces where high-intensity exercise take place (with & without masks), generate higher aerosol concentrations which can linger for long periods in the air.
Recent study: Suggests CO2 levels of 500 ppm or less for gyms.
🟠 739 ppm = 0,8% rebreathed air rate .
Occupancy: Medium
⚠️ Waiting rooms , with potentially ill or infectious persons, for short to extended periods are a potentially high risk exposure location.
🔴 1338 ppm = 3% rebreathed air rate
In such spaces , ventilation should be combined with filtration* (* ie a mobile air purifier fitted with a HEPA filter)
Occupancy: Medium – High
⚠️ How safe is public transport?
Given the daily volume of passengers and frequency of use; ventilation guidelines should be designed to significantly reduce the risk of exposure?
🔴 906 ppm = 1% rebreathed air rate captured during non peak hours.
Occupancy: Medium – High
⚠️ How safe is your gym? ⚠️ Indoor spaces where high-intensity exercise take place (with & without masks), generate higher aerosol concentrations which can linger for long periods in the air.
Recent study: Suggests CO2 levels of 500 ppm or less for gyms.
🟠 739 ppm = 0,8% rebreathed air rate .
The goal of ventilation – to reduce the spread of disease and lower the risk of exposure according to the Centers for Disease Control (CDC)
The goal of ventilation – to reduce the spread of disease and lower the risk of exposure according to the
Centers for Disease Control (CDC)
