Indicator: 0.5-5mg/m3
Measuring Range: 0.5-5mg/m3, Number of Pump Strokes 5
Sampling Time: 1 minute per pump stroke
Colour Change: Pale yellow → Reddish purple
Reaction Principle: H2SO4 + BaCl2 → 2HCl, HCl+Base → Chloride
Coefficient of Variation: 10% (for 0.5 to 2 mg/m3), 5% (for 2 to 5 mg/m3)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Manual tube
Performance
| Measuring Range |
0.5 to 5 mg/m3 |
| Number of Pump Strokes |
5 |
| Correction Factor |
1 |
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.2 mg/m3(n=5) |
| Colour Change |
Pale yellow → Reddish purple |
| Reaction Principle |
H2SO4 + BaCl2 → 2HCl
HCl+Base → Chloride |
| Coefficient of Variation |
10% (for 0.5 to 2 mg/m3), 5% (for 2 to 5 mg/m3) |
| 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 |
| Hydrogen chloride |
 0.05 ppm |
+ |
Reddish purple |
| Chlorine |
1.5 ppm |
+ |
Reddish purple |
| sulphur dioxide |
|
No |
No |
| Nitrogen dioxide |
4 ppm |
+ |
Reddish purple |
| Hydrogen fluoride |
0.5 ppm |
+ |
Reddish purple |
| Calibration gas generation |
Vaper pressure method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.2mg/m3(2014) |
- |
- |
