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GAS3D Ammonia Passive Dosi-Tube 2.5 – 1000ppm
Description
GAS3D Ammonia (NH3) Gastec Passive Sampling Dosi Tubes (Time Weighted Average Detector Tubes)
The Dosi-Tube System allows an operator to evaluate the level of gas a worker is exposed to over a time period such as a working shift.
The Dosi-Tube is easily clipped into the Dosi-tube holder (GAS710) which is worn on a garment of clothing.
| Performance |
| Measuring Range | 2.5 to 1000ppm |
| Sampling Hours | 0.5 to 10 hours |
| Detecting Limit | 0.5ppm (10 hours) |
| Colour Change | Purple Yellow |
| Reaction Principle | Ammonia neutralizes analyzing agent to discolour the indicator to yellow. |
| Coefficient of Variation | 10% (for 25 to 500 ppm･hr) |
| Shelf Life | Up to 3 years from point of manufacture |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at cool and dark place. | |
| Possible coexisting substances and their interferences |
| Substance | Concentration | Interference | Change colour by itself |
| Amines, Hydrazine | – | Plus error | Produce yellow stain. |
| Aromatic amines | – | No effect | No discoloration |
| Other substance measurable with this detector tube | |||||
| Substance | Correction Factor | Sampling Time | Measuring Range | ||
| Dimethylamine | 0.75 | 0.5 to 10 hours | 1.9 to 750 ppm | ||
| N,N-Dimethylethylamine | 1.6 | 4 to 1600 ppm | |||
| Hydrazine | 0.65 | 1.6 to 650 ppm | |||
| Triethylamine | 2.1 | 5.3 to 2100 ppm | |||
| Calibration gas generation | Permeation tube method |
Additional Information
| Weight | 0.1 kg |
|---|---|
| Multi Gas Tags | Ammonia (NH3), Dimethylamine ((CH3)2NH), Hydrazine (N2H4), N-N-Dimethylethylamine (C4H11N), Triethylamine ((C2H5)3N) |
| Gas Range | |
| Brand | |
| Configuration |
Product Downloads
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