---
title: Using a Phase Diagram for Vapor Pressure Curves
description: While phase diagrams are primarily used by chemists in laboratory environments, these tools can be useful for sample analysis. In some analytical systems, a liquid sample must be converted to gas through vaporization before it can be analyzed. A phase diagram’s vapor pressure curves allow engineers to identify phase changes for distinct materials and chemical compounds.
---

[Fluid Systems Engineering & Management Blog | Swagelok NorCal ](https://northerncal.swagelok.com/blog)

# [Using a Phase Diagram for Vapor Pressure Curves](https://northerncal.swagelok.com/blog/using-a-phase-diagram-for-vapor-pressure-curves)

 Written by [Jeff Hopkins](https://northerncal.swagelok.com/blog/author/jeff-hopkins) | 7/11/19 8:00 PM

While phase diagrams are primarily used by chemists in laboratory environments, these tools can be useful for sample analysis. In some analytical systems, a liquid sample must be converted to gas through vaporization before it can be analyzed. A phase diagram’s vapor pressure curves **allow engineers to identify phase changes** for distinct materials and chemical compounds.

[Read the full blog post on *Swagelok Reference Point* →](https://www.swagelok.com/en/blog/using-phase-diagram-vapor-pressure-curves)

[View full post](https://northerncal.swagelok.com/blog/using-a-phase-diagram-for-vapor-pressure-curves)

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