Method 140.1

Odor (Threshold Odor, Consistent Series)

This method is applicable to the determination of threshold odor of drinking, surface, and saline waters, domestic and industrial wastes. Highly odorous samples are reduced in concentration proportionately before being tested. Thus, the method is applicable to samples ranging from nearly odorless natural waters to industrial wastes with threshold odor numbers in the thousands.

(EPA: Office of Water)


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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   Odor tests should be completed as soon as possible after collection of the sample.
Preservatives:   If storage is necessary, collect at least 1000 mL of sample in a bottle filled to the top. Refrigerate, making sure no extraneous odors can be drawn into the sample as the water cools.
Required Preps:   Not noted in method
Collection Method:   Water samples must be collected in glass bottles with glass or Teflon-lined closures. Plastic containers are not reliable for odor samples and must not be used.
Analytical Methodology:   N/A
Documentation:   140.1

Analyte List*

Analyte Formula CAS Number Detection Limit

* 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.