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Precision Comparison Between ASTM Test Methods D7039, D2622, and D5453


ASTM Proficiency Testing Programs (PTP) are statistical quality assurance programs that enable laboratories to evaluate and improve performance. XOS compiled sulfur data from the ASTM monthly RFG and ULSD PTP programs between 2015 – 2017 to compare the precision of the most commonly used sulfur test methods: D2622, D7039, and D5453.

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