|
|
| Performance |
Measuring
Range
|
0.1 to 10 ppm |
Sampling Hours
|
1 to 10 hours |
Detecting Limit
|
0.02ppm (10 hours) |
Color Change
|
Pink --->
Yellow |
| Reaction
Principle |
Ammonia neutralizes
analyzing agent to discolor the indicator to yellow. |
| Coefficient
of Variation |
10% (for 1 to 10
ppm-hr) |
| Shelf
Life |
2 Years |
| Corrections
for temperature & humidity |
Temperature and
Humidity correction is necessary |
| Store the
tubes at cool and dark place. |
| Possible
coexisting substances and their interferences |
Substance
|
Interference |
Change
color by itself |
Amines
|
Plus error
|
Produce yellow
stain |
Hydrazine
|
Plus error
|
Produce yellow
stain |
| Other
substance measurable with this detector tube |
Substance
|
Correction
Factor
|
Sampling
time
|
Measuring
Range |
Methyl amine
|
1.9
|
1 to 10 hours
|
0.19 to 19 ppm |
Trimethyl amine
|
2.3
|
1 to 10 hours
|
0.23 to 23 ppm |
| Calibration
gas generation |
Permeation tube method |
TLV-TWA
|
TLV-STEL
|
Explosive
range |
| 25ppm |
35ppm |
15 to 28% |
|
