Indicator: 2 to 50 ppm
Measuring Range:
+ 2 to 50 ppm, Number of Pump Strokes 3
+ 50 to 100 ppm, Number of Pump Strokes 2
Sampling Time: 3 minutes per pump stroke
Colour Change: Pale Yellow → Yellow
Reaction Principle: C7H12O + C6H3(NO2)2NHNH2 → (CH3)2C:NNHC6H3(NO2)2
Coefficient of Variation: 15% (for 2 to 10 ppm), 10% (for 10 to 50 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 2 to 50 ppm |
50 to 100 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
3 minutes per pump stroke |
| Detecting Limit |
0.2 ppm (n=3) |
| Colour Change |
Pale Yellow → Yellow |
| Reaction Principle |
C7H12O + C6H3(NO2)2NHNH2 → (CH3)2C:NNHC6H3(NO2)2 |
| Coefficient of Variation |
15% (for 2 to 10 ppm), 10% (for 10 to 50 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 |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 50 ppm |
75 ppm |
1.15% or higher |
