Indicator: 0.05 to 1 %
Measuring Range:
+ 0.025 to 0.05 %, Number of Pump Strokes 2
+ 0.05 to 1 %, Number of Pump Strokes 1
+ 1 to 2 %, Number of Pump Strokes 1/2
Sampling Time: 1 minute per pump stroke
Colour Change: Orange → Dark green
Reaction Principle: CH2:CHCl + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 0.05 to 0.2 %), 5% (for 0.2 to 1 %)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.025 to 0.05 % |
0.05 to 1 % |
1 to 2 % |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
| 1 minute per pump stroke |
45 seconds |
|
| Detecting Limit |
0.005 % (n=2) |
| Colour Change |
Orange → Dark green |
| Reaction Principle |
CH2:CHCl + Cr6+ + H2SO4 → Cr3+ |
| Coefficient of Variation |
10% (for 0.05 to 0.2 %), 5% (for 0.2 to 1 %) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Organic solvents |
|
+ |
Dark green |
| Calibration gas generation |
Static gas dilution method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 1 ppm (2014) |
- |
3.6 to 23 % |
