Indicator: 10~100ppm
Measuring Range: 5~100ppm, Number of Pump Strokes 2
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Pale blue
Reaction Principle: CH3C6H10OH + Cr6++ H3PO4 → Cr3+
Coefficient of Variation: 10% (for 5 to 50 ppm), 5% (for 50 to 250 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
5 to 100 ppm |
| Number of Pump Strokes |
2 |
| Correction Factor |
1 |
| Sampling Time |
2 minutes per pump stroke |
| Detecting Limit |
1 ppm (n=2) |
| Colour Change |
Yellow → Pale blue |
| Reaction Principle |
CH3C6H10OH + Cr6++ H3PO4 → Cr3+ |
| Coefficient of Variation |
10% (for 5 to 50 ppm), 5% (for 50 to 250 ppm) |
| 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 |
| Cyclic alcohols |
|
+ |
Pale blue |
| Aromatic HCs |
|
+ |
Pale blue |
| Calibration gas generation |
Vaper pressure method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 50 ppm(2014) |
- |
1% or higher |
