This method is for the determination of pH in soils and waste samples. Wastes may be solids, sludges, or non-aqueous liquids. If water is present, it must constitute less than 20% of the total volume of the sample. The sample is mixed with reagent water, and the pH of the resulting aqueous solution is measured.
NOTE: This method is an update of and replaces Method 9045C.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Samples should be analyzed as soon as possible per the method. |
| Preservatives: | None specified in the method. |
| Required Preps: | 50mL Glass or plastic bottle with Teflon-lined lid. |
| Collection Method: | Grab sampling |
| Analytical Methodology: | pH Meter |
| Documentation: | 
9045D
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| pH | 0.1 |
pH unit | ||
* 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.