ASTM D445

ASTM D445 is a standardized test method used to measure the flow rate or viscosity of liquid fuels, oils, and other similar fluids. It determines how easily a liquid flows under specific conditions, which is essential for ensuring proper performance and compatibility in engines and machinery. The test involves measuring the time it takes for a set volume of liquid to flow through a designated tube at a controlled temperature. This helps manufacturers and engineers monitor quality and make sure that the fluid's flow characteristics meet industry standards.