ASTM D6986 Standard Test Method for Free Water, Particulate and Other Contamination in Aviation Fuels (Visual Inspection Procedures)
9. Report
9.1 General Requirements:
9.1.1 The report shall provide an adequate description of the sample including the type of fuel, the type of sample container, the source of the sample and the date, time, and approximate temperature of the sample. The report shall also indicate the approximate ambient temperature at which the test was run.
9.2 Procedure A - Clear Container Procedure:
9.2.1 The results shall be shown as one of the particulates and one of the water contamination ratings in Tables 1 and 2 respectively.
9.2.1.1 Example: Procedure A - clear and bright.
9.2.1.2 If the bar chart and photographs were used to rate the sample, the report shall include the haze rating (based on the number of lines visible in the sample) and a note as to whether particles or water droplets were found on the bottom of the sample container.
9.2.1.3 Example: Procedure A - clear and bright (bar chart = 1).
9.2.2 Any special or unusual observations, (examples are listed in Table 3) shall also be reported.
9.3 Procedure B - Opaque Container Procedure:
9.3.1 The results shall be shown as one of the particulates and one of the water contamination ratings in Tables 1 and 2.
9.3.1.1 Example: Procedure B - clear and bright.
9.3.2 Any special or unusual observations (examples are listed in Table 3).
10. Precision and Bias
10.1 It is not possible to specify the precision of Procedure A or B in this test method because both procedures are judged on a go-no go basis and are not quantitative measurements.
10.2 No justifiable statement can be made on the bias of either procedure because a fuel haze can be the result of a number of causes and a relationship with any single absolute quantitative measurement is not possible.
11. Keywords
11.1 aviation fuel appearance; free water; particulates; product contamination; sample containers; white bucket
