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GAS152D Methyl Ethyl Ketone Passive Dosi-Tube 2 – 600ppm
Description
GAS152D Methyl Ethyl Ketone 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 holder (GAS710) which is worn on a garment of clothing.
| Performance |
| Measuring Range | 2 to 600 ppm |
| Sampling Hours | 1 to 10 hours |
| Detecting Limit | 2 ppm (10 hours) |
| Colour Change | Yellow Reddish Brown |
| Reaction Principle | Methyl Ethyl Ketone reacts with Hydroxylamine Phosphate to liberate Phosphorus acid, which discolours pH indicator to reddish brown. 3CH3COC2H5 + (NH2OH)3H3PO4 H3PO4 H3PO4 + Base Phosphate |
| Coefficient of Variation | 10% (for 20 to 600 ppm-hr) |
| Shelf Life | Up to 2 years from point of manufacture |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes in the refrigerator to keep at 10oC (50oF) or below. | |
|
Possible coexisting substances and their interferences |
| Substance | Concentration | Interference | Change colour by itself |
| Aldehydes | – | Plus error | Discolours reddish brown |
| Ketones | – | Plus error | Discolours reddish brown |
| Acid gases | – | Plus error | Discolours reddish brown (Unclear demarcation) |
| Calibration gas generation | Diffusion tube method |
Additional Information
| Weight | 0.1 kg |
|---|---|
| Multi Gas Tags | Acetaldehyde (CH3CHO), Acetone (CH3COCH3), Methyl Ethyl Ketone (MEK) (CH3COC2H5), Methyl Isobutyl Ketone ((CH3)2CHCH2COH3) |
| Gas Range | |
| Brand | |
| Configuration |
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