Standard Test Method for Density, Relative Density, or API Gravity of Liquid Petroleum by Portable Digital Density Meter.
Get more information about the standard at ASTM D7777-24.
ASTM D7777 is a standard test method for determining the density, relative density, or API gravity of liquid petroleum products using portable digital density meters. This method is particularly advantageous for field applications, offering a safer and more efficient alternative to traditional hydrometer methods.
Details
The ASTM D7777 test method employs an oscillating U-tube within a portable digital density meter. The change in oscillation frequency, due to the sample’s mass, is used alongside calibration data to determine the sample’s density, relative density, or API gravity. The method is suitable for determining density to the nearest 1 kg/m³. For higher precision measurements, Test Method D4052 is recommended.
Industries and Applications
ASTM D7777 is widely applied in various industries and applications, including:
- Petroleum Exploration and Production: Field personnel utilize this method to quickly assess the quality and classification of crude oil and other petroleum products directly at extraction sites
- Refining and Processing: Refineries employ this standard to monitor product specifications during processing, ensuring consistency and compliance with industry standards
- Transportation and Storage: Companies involved in the transport and storage of petroleum products use this method to verify product density, aiding in inventory management and regulatory compliance
- Quality Control Laboratories: Laboratories implement this standard to provide accurate density measurements for various petroleum products, supporting quality assurance and product certification processes