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Federal Register Notices Related to SW-846

Each time SW-846 is officially updated, the new and revised information is released to the public for comment before publication. Below you can find the Federal Register notices for proposed updates along with the notices for the finalized updates. Federal Register notices are also included for the Methods Innovation Rule (MIR). For a tabular history of each method over time with the approval of each update, see the SW-846 Methods Status Table.

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  • Update II

    Update IIA added Method 4010 to SW-846.

    Update II added 62 new and revised methods to SW-846, updated the Abstract and Table of Contents, and updated Chapters Two, Three, and Four. This action also amended Chapter Seven of SW-846 by removing the statement that Method 9095 may be used to determine free liquid.

    Update IIB added revised methods 9040B and 9045C, clarifying language regarding the appropriate temperature for pH measurements for highly alkaline materials.