EXPLANATION
This test method provides a gravimetric measurement of the particulate matter present in a sample of aviation turbine fuel. The objective is to minimize these contaminants to avoid filter plugging and other operational problems. Although tolerable levels of particulates have not yet been established for all points in fuel distribution systems, the total contaminant measurement is normally of interest.
TEST SUMMARY
A known volume of fuel is filtered through a preweighed test membrane filter and the increase in membrane filter mass is weight determined after washing and drying. The change in weight of a control membrane located immediately below the test membrane filter is also determined. The particulate contaminant is determined from the increase in mass of the test membrane relative to the control membrane filter.
TEST PRECISION
Where X is the mean of the two results.
This precision was determined in the range from 0 to 0.6 mg/L of particulate content.
This test method has no bias.