Indicator: 5 to 60 ppm
Measuring Range:
+ 0.5 to 2.5 ppm, Number of Pump Strokes 2 to 5
+ 2.5 to 60 ppm, Number of Pump Strokes 1
Sampling Time: 1 minute per pump stroke
Colour Change: White → Yellow
Reaction Principle:
+ CCl4 + I2O5 + H2S2O7 → COCl2,
+ COCl2 + (CH3)2NC6 H4CHO→ (CH3)2NC6 H4Cl2,
+ (CH3)2NC6 H4Cl2 + (C6H5)2NH → Yellow product
Coefficient of Variation: 15% (for 2.5 to 20 ppm), 10% (for 20 to 60 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Details
Catalog
Manual
Performance
Measuring Range |
0.5 to 2.5 ppm |
2.5 to 60 ppm |
|
Number of Pump Strokes |
|
Correction Factor |
|
Sampling Time |
1 minute per pump stroke |
Detecting Limit |
0.2 ppm (n=5) |
Colour Change |
White → Yellow |
Reaction Principle |
CCl4 + I2O5 + H2S2O7 → COCl2 COCl2 + (CH3)2NC6 H4CHO→ (CH3)2NC6 H4Cl2 (CH3)2NC6 H4Cl2 + (C6H5)2NH → Yellow product
|
Coefficient of Variation |
15% (for 2.5 to 20 ppm), 10% (for 20 to 60 ppm) |
Shelf Life |
1 Years |
Corrections for temperature & humidity |
Unnecessary |
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 |
100 ppm |
+ |
Yellow |
Chlorine, Bromine |
50 ppm |
+ |
Yellow |
Vinyl chloride, Methylene chloride |
|
No |
No |
Chloroform |
|
No |
No |
Methyl bromide |
100 ppm |
+ |
Yellow |
Tetrachloroethylene |
|
No |
No |
1,1,1-Trichloroethane |
100 ppm |
+ |
Yellow |
Trichloroethylene |
|
No |
No |
Other substance measurable with this detector tube
Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
Chloropicrin |
1.0 |
1 |
25 to 60 ppm |
Calibration gas generation |
Diffusion tube method |
TLV-TWA |
TLV-STEL |
Explosive range |
5 ppm (2014) |
10 ppm (2014) |
- |