Product Description
Details
GAS151D Acetone 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.
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Performance |
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Measuring Range |
5 to 1500 ppm |
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Sampling Hours |
1 to 10 hours |
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Detecting Limit |
5ppm (10 hours) |
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Colour Change |
Yellow Reddish Brown |
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Reaction Principle |
Acetone reacts with Hydroxylamine Phosphate to liberate Phosphorus Acid, which discolours pH indicator to reddish brown. 3CH3COCH3 + (NH2OH)3H3PO4 H3PO4 |
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Coefficient of Variation |
10% (for 50 to 1500 ppm∙hr) |
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Shelf Life |
Up to 2 years from point of manufacture |
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Corrections for |
Temperature correction is necessary |
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Store the tubes in the refrigerator to keep at 10oC (50oF) or below. |
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Possible coexisting substances and their interferences |
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Substance |
Concentration |
Interference |
Change colour by itself |
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Aldehydes, Ketones |
- |
Plus error |
Discolours reddish brown |
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Acid gases |
- |
Plus error |
Discolours reddish brown |
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Other substance measurable with this detector tube |
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Name of Substance |
Correction Factor |
Measuring Range |
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Methyl Ethyl Ketone |
1.3 |
6.5 to 1950 ppm |
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Methyl Isobutyl Ketone |
2.3 |
11.5 to 3450 ppm |
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Acetaldehyde |
0.8 |
4 to 1200 ppm |
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