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1.The degrees of freedom associated with the reproducibility estimate from this interlaboratory study for D1160 Biodiesel Precision for IBP are 22. Since the minimum requirement of 30 (in accordance with Practice D6300) is not met, users are cautioned that the actual reproducibility may be significantly different than these estimates. 2.The degrees of freedom associated with the reproducibility estimate from this interlaboratory study for D1160 Biodiesel Precision for 5 to 50 % are 18. Since the minimum requirement of 30 (in accordance with PracticeD6300) is not met, users are cautioned that the actual reproducibility may be significantly different than these estimates. 3.The degrees of freedom associated with the reproducibility estimate from this interlaboratory study for D1160 Biodiesel Precision for 60 to 95 % are 25. Since the minimum requirement of 30 (in accordance with PracticeD6300) is not met, users are cautioned that the actual reproducibility may be significantly different than these estimates. 4.The degrees of freedom associated with the reproducibility estimate from this interlaboratory study for D1160 Biodiesel Precision for FBP are 14. PracticeD6300does not recommend publishing precision estimates with degrees of freedom less than 15 as the reliability of such estimates is highly questionable. 5.The precision statements were derived from a 2012 interlaboratory cooperative test program.A total of nine participating laboratories using various D1160 automated, automatic, or manual apparatus analyzed blind replicates of eleven sample sets comprised of eight specification grade biodiesel (derived from soy, canola, tallow, and yellow grease), two mixed blends of biodiesel (soy and tallow), and a mustard oil. The distillation range was from 274 to 400¡ãC. Information on the type of samples and their average boiling points are in the research report. [ Last edited by À¶É«ÓÎÓã¹éÇé on 2014-1-4 at 23:20 ] |
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