This method is used to determine asbestos fibers in the optically visible range and is intended to complement the results obtained by phase contrast microscopy (Method 7400). The sample is collected on a filter and analyzed using transmission electron microscopy. The quantitative working range is 0.04 to 0.5 fiber/cc for a 1000-L air sample. The limit of detection (LOD) depends on sample volume and quantity of interfering dust, and is <0.01 fiber/cc for atmospheres free of interferences.
No Obligation Quotation for Analytical Services
If you would like us to provide a quote for laboratory analysis, just provide us with as much information as you can about your project (the more, the better) and we'll provide you a quote via email. As you are searching or browsing our Analytical Guide, you'll see the Request-A-Quote icon... just click on it to start the request process.
| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | N/A |
| Preservatives: | Pack to reduce shock |
| Required Preps: | 25 mm, 0.45-1.2 µm cellulose ester membrane filter |
| Collection Method: | Filter, 0.5-16 L/min, volume adjusted for 100-1300 fibers/mm² filter area |
| Analytical Methodology: | Transmission Electron Microscopy |
| Documentation: | 
7402
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Asbestos | 1332-21-4 |
0.01 |
fiber/cc | |
* 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.