ISSN: 1546-962X
Page Count: 30

Statistical Performance of Methods for Measuring Sulfur Concentrations in Ultra Low Sulfur DieselReport from the 2004 Inter-laboratory Crosscheck Program
Stanley, R
Principal, RMS Statistics,

Schaefer, R
Regulatory Issues Manager, BP Global,

(Received 20 January 2006; accepted 28 June 2006)

Abstract

Data from the first year of operation (2004) of ASTM's Inter-laboratory Crosscheck Program for Ultra Low Sulfur Diesel (ULSD) is analyzed in greater depth than was possible in the monthly reports. We examine the performances of individual laboratories over the entire year, as well as long-term single-lab performance (site precision). Site-precision was found to be the largest contributor to reproducibility for the two most popular methods. While overall performance was better than anticipated from published precisions, some laboratories performed consistently better than others.

Keywords:
sulfur, diesel, crosscheck, laboratory performance, ultra low sulfur diesel

Paper ID: JAI100294
DOI: 10.1520/JAI100294
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