Indicator: 0.2 to 3.0 ppm
Measuring Range:
+ 0.1 to 0.2 ppm, Number of Pump Strokes 4
+ 0.2 to 3.0 ppm, Number of Pump Strokes 2
+ 3.0 to 6.6 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: Yellow → Reddish brown
Reaction Principle: CH2:CHCl + Cr6+ + H2SO4 → HCl, HCl + Base → Chlorides
Coefficient of Variation: 10% (for 0.2 to 1.0 ppm), 5% (for 1.0 to 3.0 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Detail
Catalog
Manual
Manual tube
Performance
| Measuring Range |
| 0.1 to 0.2 ppm |
0.2 to 3.0 ppm |
3.0 to 6.6 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
0.02 ppm (n=4) |
| Colour Change |
Yellow → Reddish brown |
| Reaction Principle |
CH2:CHCl + Cr6+ + H2SO4 → HCl
HCl + Base → Chlorides |
| Coefficient of Variation |
10% (for 0.2 to 1.0 ppm), 5% (for 1.0 to 3.0 ppm) |
| Shelf Life |
2 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
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Ethylene |
 200 ppm |
 |
No |
| Tetrachloroethylene |
1/3 |
+ |
Reddish brown |
| Trichloroethylene |
1/5 |
+ |
Reddish brown |
| Benzene, Toluene |
200 ppm |
|
No |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Allyl chloride |
Factor: 16 |
2 |
3.2 to 48 ppm |
| 1,1,2,2-Tetrachloroethane |
Factor: 10 |
2 |
2 to 30 ppm |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 1 ppm (2014) |
- |
3.6 to 23% |
