Indicator: 20 to 200 ppm
Measuring Range:
+ 6 to 20 ppm, Number of Pump Strokes 2
+ 20 to 200 ppm, Number of Pump Strokes 1
+ 200 to 900 ppm, Number of Pump Strokes 1/2
Sampling Time: 3 minute per pump stroke
Colour Change: White → Pale Pink
Coefficient of Variation: 10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 6 to 20 ppm |
20 to 200 ppm |
200 to 900 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
3 minutes per pump stroke |
| Detecting Limit |
3 ppm (n=2) |
| Colour Change |
White → Pale Pink |
| Reaction Principle |
1,1,1-Trichloroethane reacts with oxidizing agent to produce intermediate products then it reacts with detecting agent to produce pale pink stain. |
| Coefficient of Variation |
10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm) |
| Shelf Life |
2 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Halogens |
|
+ |
Pale pink |
| Nitrogen oxides |
|
+ |
Pale pink |
| Saturated halogenated hydrocarbons |
|
+ |
Pale pink |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| 1,2-Dichloroethane |
5.2 |
1 |
104 to 1040 ppm |
| 1,1,2,2-Tetrabromoethane |
0.046 |
4 |
0.92 to 9.2 ppm |
| 1,2,3-Trichloropropane |
1.8 |
4 |
36 to 360 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 350 ppm |
450 ppm |
- |
