Since a gas container has a fixed volume, the equation can be rearranged to read P=kT, where k is a constant (nR/V). This tells us that when temperature goes up, vapor pressure goes up, and vice ...

MINIVAP ON-LINE, a process monitoring analyzer, is used to measure the vapor pressure of crude oil, gasoline, NPG, and LPG.In addition, it can be used to determine the vapor-liquid ratio (LVR) of ...

Vapor pressure testing is now more repeatable and reproducible due to recent advancements in eravap design. It performs noticeably better than the precision declarations of its own ASTM standards, ...

Therefore, the RVP measures a gasoline’s vapor pressure at 100 degrees, not at ambient temperature.) Certain metro areas in 14 states designated by the EPA as high-ozone “attainment areas ...

A gasoline blend with 90% A and 10% B would have a vapor pressure contribution of 9 psi from A (0.9*10 psi) and 2 psi from B (0.1*20 psi) for a blended vapor pressure of approximately 11 psi.

The regulation being waived requires gasoline sold in the El Paso area to have a Reid Vapor Pressure (RVP) of 7.0 pounds per square inch, the EPA said in a statement on Monday.