LaMotte SULFUR DIOXIDE IN AIR TEST KIT User Manual
Page 3
The following calibration chart is provided to convert the comparator
index reading into the concentration of sulfur dioxide in the
atmosphere in parts per million (ppm). The chart is based upon the
prescribed sampling period for individual tests. After the color match is
made, find the corresponding index value on the calibration chart, then
read down the line until the sampling time is found.
The sampling period specified in the directions corresponds to
concentrations which may be encountered in ambient air conditions.
High concentrations of pollutants in the atmosphere will require shorter
sampling periods, while low concentrations will require longer sampling
periods.
SULFUR DIOXIDE IN AIR CALIBRATION CHART**
TIME
COMPARATOR INDEX NUMBER
(min)
1
2
3
4
5
6
7
8
10
0.00
0.19
0.29
0.38
0.48
0.57
0.67
0.76
30
0.00
0.06
0.10
0.13
0.16
0.19
0.22
0.25
60
0.00
0.03
0.05
0.06
0.08
0.10
0.11
0.13
90
0.00
0.02
0.03
0.04
0.05
0.06
0.07
0.08
**Values in ppm