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GAS81D Acetic Acid Passive Dosi-Tubes 0.5ppm – 100ppm
Description
GAS81D Acetic Acid 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 | 0.5 to 100 ppm |
| Sampling Hours | 1 to 10 hours |
| Detecting Limit | 0.2 ppm (10 hours) |
| Colour Change | Purple Yellow |
| Reaction Principle | Acetic acid neutralizes alkali to discolour the indicator to yellow. |
| Coefficient of Variation | 5% (for 5 to 20 ppm∙hr), 10% (for 20 to 100 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 | Interference | Change colour by itself |
| Hydrogen Chloride, Nitric Acid | Plus error | Produce yellow stain |
| Chlorine, Nitrogen Dioxide | Plus error | Produce yellow stain |
| Hydrogen Cyanide, Sulphur Dioxide | Plus error | Produce yellow stain |
| Other substance measurable with this detector tube |
| Substance | Correction | Sampling Hours | Measuring range |
| Formic Acid | Factor: 1.1 | 1 to 10 | 0.55 to 110 ppm |
| Acetic Anhydride | Factor: 0.6 | 1 to 10 | 0.3 to 60 ppm |
| Calibration gas generation | Diffusion tube method |
Additional Information
| Weight | 0.1 kg |
|---|---|
| Multi Gas Tags | Acetic Acid (CH3CO2H), Acetic Anhydride ((CH3CO)2O), Formic Acid (HCO2H) |
| Gas Range | |
| Brand | |
| Configuration |
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