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Table 1 Exposure limits

From: ‘The air that we breathe’: assessment of laser and electrosurgical dissection devices on operating theater air quality

 

Exposure Limits

Fine particulate matter PM2.5

< 28 μg/m3 over a 24-hour period (2015 target) (CCME, 2012) [39]

UFP

1,000 - 20,000 particles/m3 (Air Quality Sciences, 2011)

CO

≤ 11.5 mg/m3 (≤ 11 ppm) over a 24 hour period (Health Canada, 2012) [40]

≤ 28.6 mg/m3 (≤ 25 ppm)over a 1 hour period (Health Canada, 2012) [40]

NO2

≤ 100 μg/m3 (≤ 0.05 ppm) over a 24 hour period (Health Canada, 2012) [40]

≤ 480 μg/m3 (≤ 0.25 ppm) over a 1 hour period (Health Canada, 2012) [40]

SO2

≤ 50 μg/m3 (≤ 0.019 ppm) (Health Canada, 2012) [40]

Fine particle number count*

-

Coarse particle number count*

-

Relative humidity

30% to 55% (Health Canada, 2008) [37]

Indoor temperature

17 to 27 °C (Balaras et al., 2006) [38]

CO2

≤ 6300 mg/m3 (≤3500 ppm) (Health Canada, 2012) [40]

  1. Canadian indoor air quality exposure limit guidelines. *No current guidelines exist for ultrafine, fine, or coarse particle number counts.