ASTM D5191
Standard Test Method for Vapor Pressure of Petroleum Products and Liquid Fuels (Mini Method)
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About This Item
ASTM D5191 is the standard test method for measuring the vapor pressure of petroleum products and liquid fuels using a mini method. It is used to support consistent evaluation of fuel volatility, which can be important for product quality, handling, and compliance decisions. By focusing on a smaller-volume test approach, the standard provides a practical framework for laboratory testing of liquid fuel samples under controlled conditions.
ASTM D5191 standard overview
The ASTM D5191 standard defines a test method for determining vapor pressure in petroleum products and liquid fuels with a mini method approach. Its main purpose is to provide a repeatable way to measure a key physical property that affects how a fuel behaves during storage, transport, and use. As an ASTM standard, it gives laboratories and technical teams a common reference for test procedure, helping support consistent results across quality control and product evaluation workflows.
Where is ASTM D5191 used?
This standard is commonly used in laboratories and quality assurance settings that test petroleum products and liquid fuels. It is relevant wherever vapor pressure measurement is needed for routine product checking, batch comparison, or specification compliance. The method may be applied in fuel testing programs, refinery and terminal laboratories, and other technical environments that handle liquid fuel samples. ASTM D5191 helps create a consistent testing basis for materials where volatility is an important property to monitor.
Practical importance of ASTM D5191
ASTM D5191 matters because vapor pressure can influence product performance, safety, and compliance outcomes. A standardized test method helps reduce variation between laboratories and supports more reliable decision-making in procurement, production, and release testing. For organizations working with petroleum products and liquid fuels, the standard can help verify that materials meet expected requirements and technical specifications. In practice, this improves confidence in test results and supports more consistent quality control.
- Vapor pressure measurement for liquid fuels
- Mini method test format
- Quality control and compliance support
- Consistent laboratory evaluation
- Petroleum product testing reference
- Publication Date: 2022-11-07
- Publisher: ASTM
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