|
|
| Performance |
Measuring
Range
|
0.08 to 100 ppm |
Sampling Hours
|
0.5 to 24 hours |
Detecting Limit
|
0.1 ppm (10 hours) |
Color Change
|
White --->
Yellow |
| Reaction
Principle |
Chlorine oxidizes
o-toludine for form yellow color stain. |
| Coefficient
of Variation |
10% (for 2 to 50
ppm-hr) |
| Shelf
Life |
2 Years |
| Corrections
for temperature & humidity |
Unnecessary |
| Store the
tubes at cool and dark place. |
| Possible
coexisting substances and their interferences |
Substance
|
Concentration
|
Interference |
Change
color by itself |
Nitrogen dioxide, Halogenes
|
-
|
Plus error
|
Discolor yellow
stain |
| Calibration
gas generation |
Permeation tube method |
TLV-TWA
|
TLV-STEL
|
Explosive
range |
| 0.5ppm |
1ppm |
- |
|
