pnBAS ASTM D 323:2025

1.1 This test method covers procedures for the determination of vapor pressure (see Note 1) of gasoline, volatile crude oil, and other volatile petroleum products. 1.2 Procedure A is applicable to gasoline and other petroleum products with a vapor pressure of less than 180 kPa (26 psi). 1.3 Procedure B may also be applicable to these other materials, but only gasoline was included in the interlaboratory test program to determine the precision of this test method. 1.4 Procedure C is for materials with a vapor pressure of greater than 180 kPa (26 psi). 1.5 Procedure D for aviation gasoline with a vapor pressure of approximately 50 kPa (7 psi).