ASTM D3701 Test Method for Hydrogen Content of Aviation Turbine Fuels
12. Report
12.1 Report the mass percent hydrogen content to the nearest 0.01 mass %.
13. Precision and Bias
13.1 The precision of the method as obtained by statistical examination of interlaboratory test results is as follows:
13.1.1 Repeatability - The difference between successive test results obtained by the same operator with the same apparatus under constant operating conditions on identical test material would, in the long run, in the normal and correct operation of the test method exceed the following value only in one case in twenty:
0.09 mass %
13.1.2 Reproducibility - The difference between two single and independent results obtained by different operators working in different laboratories on identical test material would, in the long run, in the normal and correct operation of the test method exceed the following value only in one case in twenty:
0.11 mass %
13.2 Bias - A 1977 research report indicated that the hydrogen content determined by this test method is biased high with respect to the expected value for pure known materials.
14. Keywords
14.1 aviation turbine fuel; hydrogen; nuclear magnetic resonance
