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1. Search by analyte name About the search options

1-A. Use this option to search the database for an analyte name.

1-B. If you know the exact spelling of an analyte, enter it here to quickly retrieve, compare, and contrast a list of methods in NEMI.

Note: Spelling must be exact for option #1-B to work. If you do not know the exact spelling, use either Option #1-A above or click on the "Advanced Search" tab which allows you to scroll through the analyte names.

  • Quick search: Three choices: (1) Search by analyte name; (2) search by CAS number; and (3) search by method number from a dropdown list.
  • Advanced search: presents more options, including a drop-down list from which to select analyte name, as well as the ability to limit methods returned based on detection level, method source, and the analytical instrumentation used.
  • General search: Look for methods under general categories, including media (air, water, soil, etc.), subcategory (organic, radiochemical, etc.), source (EPA, USGS, etc.), or instrumentation.
  • Regulatory search: Need a method approved for drinking water or wastewater regulations? Start here.
  • The Browse Methods page presents several other ways of accessing data in the NEMI database.
2. Search by analyte CAS* number
Search using analyte code (*usually the CAS number for chemicals; may be an identifier from another system in some cases. Need to include dashes in CAS number; i.e., 14797-55-8).
3. Search by method number  
  • Search by method number
    If you already know the number of the method you are interested in, you can use this query to provide a listing of analyte performance data for the method.
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