ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography
10. Report
10.1 Report individual hydrocarbon compounds of the test sample using units of mass percent, rounded to the nearest 0.05 mass percent.
11. Precision and Bias
11.1 It is not feasible to provide a complete precision statement covering repeatability and reproducibility for this test method at this time, since a sufficient quantity of repeat tests and samples under the required ASTM protocol are not available. This information is being determined and will be available on or before May 31, 2014.
11.2 The temporary repeatability standard deviation was determined to be as shown in Table 1.
11.3 Bias - Since there is no accepted reference material suitable for determining bias for the procedure in this test method, bias cannot be determined.
12. Keywords
12.1 butylene; C1-C4 hydrocarbons; gas chromatography
