Water Vapor 0.5-32 mg-L Detection Tubes
Gastec Detection Tube No. 6 measures Water Vapor with a Range of 0.5 to 32 mg/l.
- Measuring Range:
- 0.5 to 1 mg/l
- 1 to 18 mg/l
- 18 to 32 mg/l
- No. of Pump Strokes: 2, 1, 1/2
- Correction Factor: 1/2, 1, by correction table
- Sampling Time: 1.5 min, 45 sec, 30 sec
- Detecting Limit: 0.1 mg/l (2 pump strokes)
- Color Change: Yellowish green to purple
- Corrections for temperature and humidity: Temperature correction is necessary
- Relative standard deviation: 10 % (for 1 to 6 mg/l), 5 % (for 6 to 18 mg/l)
- Shelf life: 3 years
- Reaction Principle: H2O + Mg(ClO4)2 → Mg(ClO4)2･H2O
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Acrylonitrile |
≧ 5000 ppm |
+ |
No |
| Alcohols |
≧ 2000 ppm |
+ |
No |
| Ammonia |
≧ 1000 ppm |
+ |
No |
| Esters |
≧ 5000 ppm |
+ |
No |
| Hydrogen chloride |
≧ 2000 ppm |
+ |
No |
| Hydrogen cyanide |
≧ 500 ppm |
+ |
No |
| Hydrogen sulfide |
|
No |
No |
| Ketones, Aldehides |
≧ 2000 ppm |
+ |
No |
| Nitrogen dioxide |
≧ 500 ppm |
+ |
No |
| Sulfur dioxide |
≧ 2000 ppm |
+ |
No |
Water Vapor 0.5-32 mg-L Detection Tubes
Reaction Principle - h20 + Mg (ClO4)2 to Mg (ClO4)2*H20
Possible coexisting substances and their interference:
| Substance:
|
Concentration:
|
Interference:
|
Changes Color By Itself To:
|
| Acrylonitrile
|
≧ 5000 ppm
|
+
|
NO
|
| AIcohols
|
≧ 2000 ppm
|
+
|
NO
|
| Ammonia
|
≧ 1000 ppm
|
+
|
NO
|
| Esters
|
≧ 5000 ppm
|
+
|
NO
|
| Hydrogen Chloride
|
≧ 2000 ppm
|
+
|
NO
|
| Hydrogen Cyanide
|
≧ 500 ppm
|
+
|
NO
|
| Hydrogen Sulphide
|
|
NO
|
NO
|
| Ketones, Aldehides
|
≧ 2000 ppm
|
+
|
NO
|
| Nitrogen Dioxide
|
≧ 500 ppm
|
+
|
NO
|
| Sulphur Dioxide
|
≧ 2000 ppm
|
+
|
NO
|
Water Vapor 0.5-32 mg-L Detection Tubes
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