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ASTM D2879 - Vapor Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by Isoteniscope


We perform testing by ASTM D2879 to determine the vapor pressure of a sample, including the most volatile components, using an isoteniscope. The vapor pressure of a substance as determined by isoteniscope reflects a property of the sample as received including most volatile components, but excluding dissolved fixed gases such as air. Vapor pressure, per se, is a thermodynamic property which is dependent only upon composition and temperature for stable systems. The isoteniscope method is designed to minimize composition changes which may occur during the course of measurement.

We also perform vapor pressure testing by ASTM D323ASTM D5191ASTM D6377, and ASTM E1782. These different test methods use different instruments or procedures or are used for certain sample types. Click on the test method number to learn more about each test.

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Sample quantity required: 120 ml

For additional information on this test method or to purchase a copy of the method, please click HERE to open a new window and visit the ASTM website. Learn more about our laboratory's certifications and quality program here.