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CHEMICAL ANALYSIS INFORMATION, continued
• American Water Works Association
• Water Environmental Federation
• American Society for Testing and Materials
• United States Geological Survey
• Associates of Official Analytical Chemists
All USEPA approved methods are cited in the Federal Register and
compiled in the Code of Federal Regulations. USEPA approved methods
may be used for reporting results to the USEPA and other
regulatory agencies.
USEPA Accepted
Hach has developed several procedures that are equivalent to USEPA
approved methods. Even though minor modifications exist, the USEPA
has reviewed and accepted certain procedures for reporting purposes.
These methods are not published in the Federal Register, but are
referenced to the equivalent USEPA method in the procedure.
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