ASTM D7667 Standard Test Method for Determination of Corrosiveness to Silver by Automotive Spark-Ignition Engine Fuel - Thin Silver Strip Method
13. Report
13.1 Report the corrosiveness in accordance with one of the classifications listed in Table 1, giving the test method designation; the test Procedure, A or B; test duration, minutes; and test temperature, degrees Celsius, in the following format:
Corrosion, silver strip, by D7667, Procedure A or B, X at Y:Z
where:
X = test duration, in minutes,
Y = test temperature, °C, and
Z = classification category (that is 0, 1, 2, 3 or 4).
14. Precision and Bias
14.1 Precision - The precision of this test method has not been determined.
NOTE 5 - In the case of results which consist of a rating on a non-linear scale, no generally accepted method for determining precision or bias is currently available.
14.2 Bias - The procedure in this test method has no bias because the results of silver corrosion are defined only in terms of this test method.
15. Keywords
15.1 automotive gasoline; corrosiveness to silver; silver corrosion; silver strip
