There is no designated method or equivalent methods for sulfur. We now have a performance based system where labs have to meet precision and accuracy criteria for whatever method they choose to use. A number of methods should be able to be used to meet the precision and accuracy criteria, but this will be done on a lab-specific basis.
Question and Answer was originally posted at http://www.epa.gov/otaq/diesel/documents/420b06010.pdf
Is the Agency going to publish a list of sulfur analytical methods that had been deemed equivalent under the rule?
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