ASTM D3605 Standard Test Method for Trace Metals in Gas Turbine Fuels by Atomic Absorption and Flame Emission Spectroscopy
11. Report
11.1 Report results for each element to the nearest 0.1 mg/L.
12. Precision and Bias
12.1 The precison of this test method as obtained by statistical examination of interlaboratory test results is as follows:
12.1.1 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 values only in one case in twenty:
12.1.2 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 values only in one case in twenty:
NOTE 6 - The above repeatability and reproducibility are based on a concentration range of 0.1 to 0.5 mg/L and apply only to the atomic absorption mode.
12.2 Bias - The bias of this test method cannot be determined since appropriate reference materials containing known levels of vanadium, lead calcium and sodium are not available.
13. Keywords
13.1 atomic absorption; calcium; flame emission; gas turbine fuels; lead; sodium; vanadium