Indicator: 0.5~10.0ppm
Measuring Range:
+ 0.125 to 0.25 ppm, Number of Pump Strokes 2
+ 0.25 to 10 ppm, Number of Pump Strokes 1
+ 10 to 25 ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: Pink → Pale Yellow
Reaction Principle: CH3CO2H + Base → Reaction product
Coefficient of Variation: 10% (for 0.25 to 3 ppm), 5% (for 3 to 10 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
manual tube
Performance
| Measuring Range |
| 0.125 to 0.25 ppm |
0.25 to 10 ppm |
10 to 25 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
0.05 ppm (n=2) |
| Colour Change |
Pink → Pale Yellow |
| Reaction Principle |
CH3CO2H + Base → Reaction product |
| Coefficient of Variation |
10% (for 0.25 to 3 ppm), 5% (for 3 to 10 ppm) |
| Shelf Life |
2 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at 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 |
| Ammonia |
Higher than 2 times |
 |
No |
| Chlorine, sulphur dioxide, Nitrogen dioxide |
|
+ |
Pale Yellow |
| Formic Acid, Acetic anhydride |
|
+ |
Pale Yellow |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Acetic anhydride |
Factor: 0.6 |
1 |
0.15 to 6 ppm |
| Acrylic acid |
Factor: 1.8 |
1 |
0.45 to 18 ppm |
| Butyric acid |
Factor:1.3 |
1 |
0.325 to 13 ppm |
| Formic acid |
Factor: 2.0 |
1 |
0.5 to 20 ppm |
| Isovaleric acid |
Factor: 1.5 |
1 |
0.38 to 15 ppm |
| Methacrylic acid |
Factor 1.4 |
1 |
0.35 to 14 ppm |
| Propionic acid |
Factor: 1.0 |
1 |
0.25 to 10 ppm |
| Valeric acid |
Factor: 1.5 |
1 |
0.38 to 15 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 10ppm(2014) |
15 ppm(2014) |
- |
