Frequent Questions

Where can I find information on sample holding times, preservation, and storage in SW-846?

Where can I find information on sample holding times, preservation, and storage in SW-846?

 

SW‐846 provides general guidance on holding times, preservation, and storage container materials on Table 3‐1 in Chapter 3 for inorganic analytes: (http://www.epa.gov/sites/production/files/2015-10/documents/chap3_1.pdf) and on Table 4‐1 in Chapter 4 for organic analytes: (http://www.epa.gov/sites/production/files/2015-10/documents/chap4_0.pdf).

In many cases, the individual methods provide more specific guidance on preservation and holding time that supersedes the guidance in the chapters.

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