INDOOR AIR QUALITY TEST (IAQ TEST)

Carbon Dioxide (CO2):

• Indoor: 1000 parts per million (ppm) as recommended by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) Standard 62.1-2019.
• Outdoor: The concentration varies based on the location, but generally, levels below 400 ppm are considered normal.

Carbon Monoxide (CO):

• Indoor: 9 parts per million (ppm) for an 8-hour exposure period and 35 ppm for a 1-hour exposure period, as recommended by OSHA (Occupational Safety and Health Administration) standard.

Sulfur Dioxide (SO2):

• Outdoor: 1-hour average concentration should not exceed 75 parts per billion (ppb), as recommended by the U.S. National Ambient Air Quality Standards (NAAQS).

Relative Humidity (RH):

• Indoor: Optimal range is typically between 30% and 60%, although specific requirements may vary depending on the application and comfort levels.

Temperature:

• Indoor: Comfortable temperature ranges vary based on the specific environment, but a general range of 20-24°C (68-75°F) is often considered suitable for most indoor spaces.

Oxygen (O2):

• Indoor: Oxygen levels are generally not regulated indoors as long as the concentration remains within normal atmospheric levels, which is approximately 20.9%.

Ozone (O3):

• Outdoor: 8-hour average concentration should not exceed 70 parts per billion (ppb), as recommended by the U.S. National Ambient Air Quality Standards (NAAQS).

Ammonia (NH3):

• Indoor: No specific standard limits for indoor environments. However, exposure to high concentrations of ammonia can be harmful, and occupational exposure limits may vary depending on the country or organization.

PM 10 & PM 2.5 ):

• Outdoor: 24-hour average concentration should not exceed 50 micrograms per cubic meter (µg/m³), as recommended by the U.S. National Ambient Air Quality Standards (NAAQS).

Formaldehyde (HCHO):

• Indoor: No specific standard limits for formaldehyde in general indoor environments. However, various guidelines recommend concentrations below 100 µg/m³ or 0.1 ppm for acceptable air quality.

Volatile Organic Compounds (VOC):

• Indoor: No specific standard limits for VOCs in general indoor environments. However, guidelines such as LEED (Leadership in Energy and Environmental Design) recommend levels below 500 µg/m³ or 0.5 ppm for acceptable indoor air quality.