👉 The test fluid, also known as the test medium or test liquid, is a substance used to evaluate the performance and properties of materials under controlled experimental conditions. It serves as a medium through which various tests are conducted, such as mechanical, thermal, or chemical analyses, to assess the material's behavior, durability, and response to different environmental factors. The fluid can vary widely in composition, ranging from simple water to complex chemical solutions, and its properties—such as viscosity, density, and pH—are carefully controlled to ensure accurate and reliable test results. This allows researchers and engineers to gain insights into material performance, optimize manufacturing processes, and develop new materials with desired characteristics.
