Indicator: 0.04 to 2.5%
Measuring Range:
+ 0.02 to 0.04%, Number of Pump Strokes 2
+ 0.04 to 2.5%, Number of Pump Strokes 1
+ 2.5 to 5.0%, Number of Pump Strokes 1/2
Sampling Time: 1 minute per pump stroke
Colour Change: Pink → Pale Blue
Reaction Principle: CH3CH(OH)CH3 + Cr6++ H2SO4 → Cr3+
Coefficient of Variation: 15% (for 0.04 to 0.5 %), 10% (for 0.5 to 2.5 %
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.02 to 0.04% |
0.04 to 2.5% |
2.5 to 5.0% |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.004% (n=2) |
| Colour Change |
Pink → Pale Blue |
| Reaction Principle |
CH3CH(OH)CH3 + Cr6++ H2SO4 → Cr3+ |
| Coefficient of Variation |
15% (for 0.04 to 0.5 %), 10% (for 0.5 to 2.5 %) |
| 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 |
| Alcohols |
|
+ |
Pale blue |
| Carbon dioxide |
|
No |
No |
| Carbon monoxide |
|
No |
No |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Propyl alcohol |
1 |
1 |
0.04 to 2.5 ppm |
| Calibration gas generation |
Static gas dilution method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 200 ppm(2014) |
400 ppm(2014) |
2 to 12.7% |
