This method is for the collection and analysis of carbon dioxide in workplace air. The sample is collected into a gas sampling bag. After collection, the sample is analyzed by GC/TCD (thermal conductivity detector).
When shipping the sampling bag, make sure to fill the bag no more than half full to allow for the gas to expand during loss of pressurization during flight. Otherwise, the bags may burst during travel.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The method says 14 days from sample collection to analysis but to analyze the samples as soon as possible. |
| Preservatives: | None specified by the method. |
| Required Preps: | Tedlar or equivalent sampling bag |
| Collection Method: | The method recommends a 0.01 - 0.05 L/min. flow rate with a 2 - 5L sample collection volume. |
| Analytical Methodology: | GC/TCD |
| Documentation: | 
ID-172
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Carbon dioxide | CO2 |
124-38-9 |
500 |
ppm |
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.