Indicator: 100 to 500 ppm
Measuring Range:
+ 100 to 500 ppm, Number of Pump Strokes 1
+ 500 to 2000 ppm, Number of Pump Strokes 1/2
Sampling Time: 3 minute per pump stroke
Colour Change: White → Reddish orange
Coefficient of Variation: 10% (for 100 to 200 ppm), 5% (for 200 to 500 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Detail
Catalog
Manual
Performance
| Measuring Range |
| 100 to 500 ppm |
500 to 2000 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
3 minutes per pump stroke |
| Detecting Limit |
50 ppm (n=1) |
| Colour Change |
White → Reddish orange |
| Reaction Principle |
1,1,1-Trichloroethane reacts with oxidizing agent to produce intermediate products then it react with detecting agent to produce reddish orange stain. |
| Coefficient of Variation |
10% (for 100 to 200 ppm), 5% (for 200 to 500 ppm) |
| Shelf Life |
3 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 |
| Chlorine, Bromine, Iodine |
|
+ |
Reddish orange |
| Chloroform, Dichloromethane |
|
+ |
Reddish orange |
| Carbon tetrachroride |
|
No |
No |
| Methyl bromide |
|
+ |
Reddish orange |
| Trichloroethylene, Tetrachloroethylene |
|
+ |
Reddish orange |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Chlorobromomethane |
Factor: 0.22 |
1 |
22 to 110 ppm |
| 1,1-Dichloroethane |
Factor: 0.9 |
1 |
90 to 4500 ppm |
| 1,2-Dichloroethane |
Factor: 4.0 |
1 |
400 to 2000 ppm |
| 1,1,2-Trichloroethane |
Tube 135 Reading (n=2) |
100 |
200 |
300 |
400 |
500 |
| 1,1,2-Trichloroethane (ppm) |
220 |
350 |
480 |
610 |
750 |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 350 ppm |
450 ppm |
- |
