ASTM D291

ASTM D291 is a standard test method used to measure the density of liquid petroleum products, particularly those with low viscosity, like gasoline or light oils. By determining the density, it helps assess the product's quality and ensures compliance with specifications. The test involves using a hydrometer, a device that floats in the liquid to indicate its density based on how deep it sinks. This information is crucial for industries that rely on accurate measurements for production, storage, and transportation of petroleum products. Understanding density helps in evaluating how products behave under different conditions.