本试验标准涵盖了测量燃料或燃料替代物通过约3mm厚的弹性体、塑料或复合材料试样渗透的程序。该方法包括用测试流体（燃料或燃料替代物）填充测试杯，将测试样品密封在杯的开口端，然后将密封容器置于所需测试温度的烘箱中，并测量随时间的重量损失。根据重量损失率和试样的暴露面积计算渗透率。

This test standard covers the procedure for measuring the permeation of fuel or fuel surrogates through test samples of elastromeric, plastic, or composite materials, up to about 3 mm thick.The method involves filling a test cup with the test fluid (fuel or fuel surrogate), sealing test sample over the open end of the cup, and then placing the sealed container into an oven at the desired test temperature and measuring the weight loss over time. Permeation rates are calculated from the rate of weight loss and the exposed area of the test sample.