|
|
| Trichloroethylene |
C,Œ2C:CHCl |
NO.132D |
| Performance |
Measuring
Range
|
3 to 300 ppm |
Sampling Hours
|
1 to 8 hours |
Color Change
|
Yellow --->
Purple |
| Reaction
Principle |
Trichloroethylene
is oxidized by sulfuric acid to generate
hydrogen chloride to change the indicator to purple. |
| Coefficient
of Variation |
10% (for 25 to
300 ppm-hr) |
| Shelf
Life |
1 Years |
| Corrections
for temperature & humidity |
Temperature correction
is necessary |
| Store the
tubes in the refrigerator to keep at 10oC (50oF) or below. |
| Possible
coexisting substances and their interferences |
Substance
|
Interference |
Change
color by itself |
Hydrogen chloride, Chlorine
|
Plus error
|
Produce purple
stain |
1,2-Dichloroethylene, Tetrachloroethylene
|
Plus error
|
Produce purple
stain |
Toluene, Xylene
|
No effect
|
No discoloration |
| Other
substance measurable with this detector tube |
Substance
|
Correction
Factor
|
Sampling
time
|
Measuring
Range |
1,2-Dichloroethylene
|
2.0
|
1 to
8 hours |
6 to 600 ppm |
Chlorine
|
0.8
|
2.4 to 240 ppm |
Hydrogen chloride
|
0.6
|
1.8 to 80 ppm |
Tetrachloroethylene
|
0.5 |
1.5 to 150 ppm |
| Vinylidene chloride |
2.0 |
6 to 600 ppm |
| Calibration
gas generation |
Permeation tube method |
TLV-TWA
|
TLV-STEL
|
Explosive
range |
| 50ppm |
100ppm |
- |
|
