User guide

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MRK-D-0022 V3.1 Aeroqual Series 200, 300 & 500 User Guide
handled as such. Health and safety data are often revised, Aeroqual recommends checking external
sources for the most up to date information. Aeroqual suggests that all span calibrations be performed
in a fume hood such as the one in the image below to avoid exposure to personal.
Gas
IDLH (ppm)
PEL (ppm)
STEL (ppm)
LEL (ppm)
Carbon Monoxide
1200
25
N/A
125,000
Carbon Dioxide
40000
5000
30000
N/A
Nitrogen Dioxide
20
N/A
1
N/A
Ammonia (NH3)
300
25
35
150,000
Hydrogen
N/A
N/A
N/A
40,000
Hydrogen Sulfide
100
10
15
40,000
Methane
N/A
N/A
N/A
50,000
Ozone
5
0.1
0.3
N/A
PERC
N/A
N/A
N/A
N/A
Sulphur Dioxide
100
2
5
N/A
Isobutylene
N/A
N/A
N/A
18,000
IDLH: Immediately Dangerous to Life or Health
PEL: Permissible exposure limit (usually based upon a time weighted 8 hour average
STEL: Short - term exposure limit ( 1 hour average)
LEL: Lower explosion limit
Source: http://www.cdc.gov/niosh/idlh/intridl4.html 21/06/2013 (always check for latest
information)