Indicator: 0.1 to 5 ppm
Measuring Range:
+ 0.05 to 0.1 ppm, Number of Pump Strokes 10
+ 0.1 to 5 ppm, Number of Pump Strokes 5
+ 5 to 20 ppm, Number of Pump Strokes 1
Sampling Time: per pump stroke
Colour Change: White → Yellow
Reaction Principle: COCl2+ (CH3)2NC6H4CHO → (CH3)2NC6H4CHCl2 + CO2, (CH3)2NC6H4CHCl2 + (C6H5)2NH → Yellow Product
Coefficient of Variation: 10% (for 0.1 to 1 ppm), 5% (for 1 to 5 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.05 to 0.1 ppm |
0.1 to 5 ppm |
5 to 20 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.01 ppm (n=10) |
| Colour Change |
White → Yellow |
| Reaction Principle |
COCl2+ (CH3)2NC6H4CHO → (CH3)2NC6H4CHCl2 + CO2
(CH3)2NC6H4CHCl2 + (C6H5)2NH → Yellow Product |
| Coefficient of Variation |
10% (for 0.1 to 1 ppm), 5% (for 1 to 5 ppm) |
| Shelf Life |
1.5 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 |
| Hydrogen chloride |
1/10 time |
+ |
Yellow |
| Chlorine |
1/2 time |
+ |
Yellow |
| Nitrogen dioxide |
1/5 time |
+ |
Yellow |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.1 ppm (2014) |
- |
|
