Frequent Questions

Low sulfur gasoline test method is D-2622 [WDXRF], low sulfur diesel will be tested by D-6428 [5453 alternate]. Is there a chance that both test methods could be merged so that one test method for both low sulfur gasoline and diesel would be permitted?

The Agency has adopted a performance based test method approach which would set forth criteria to determine the acceptability of use of voluntary consensus standard based analytical test methods. Under this approach, industry would be able to determine whether test methods allowed under the low sulfur gasoline rule may also be utilized under the low sulfur diesel rule.

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