Indicator: 1 to 20 ppm
Measuring Range:
+ 0.2 to 1 ppm, Number of Pump Strokes 2 to 5
+ 1 to 20 ppm, Number of Pump Strokes 1
+ 20 to 76 ppm, Number of Pump Strokes 1/2
Sampling Time: per pump stroke
Colour Change: Yellow → Pink
Coefficient of Variation: 10% (for 1 to 5 ppm), 5% (for 5 to 20 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Detail
Catalog
Manual
Performance
Measuring Range |
0.2 to 1 ppm |
1 to 20 ppm |
20 to 76 ppm |
|
Number of Pump Strokes |
|
Correction Factor |
|
Sampling Time |
45 seconds per pump stroke |
Detecting Limit |
0.05 ppm (n=5) |
Colour Change |
Yellow → Pink |
Reaction Principle |
Hydrogen chloride reacts with indicator to produce pink stain. HCl + Indicator → Chemical reaction compound |
Coefficient of Variation |
10% (for 1 to 5 ppm), 5% (for 5 to 20 ppm) |
Shelf Life |
3 Years |
Corrections for temperature & humidity |
Unnecessary |
Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
Substance |
Concentration |
Interference |
Change colour by itself to |
Chlorine |
1/2 |
+ |
Pink |
Nitric Acid |
1/10 |
+ |
Pink |
sulphur dioxide |
10 times |
+ |
Pink |
Nitrogen dioxide |
5 times |
+ |
Pink |
Calibration gas generation |
High pressure gas cylinder method |
TLV-TWA |
TLV-STEL |
Explosive range |
- |
C 2 ppm |
- |