How to make sure the tests are executed correctly?

What is hydrostatic testing?

Hydrostatic testing (or “fluid resistance testing”) is a method used to evaluate the water resistance of textiles, materials and products. This test is usually done with a device called a “fluid resistance meter.” The liquid resistance gauge consists of a fixed clamp and an adjustable circular platform. The sample to be tested is sandwiched between two clamps and placed above a circular platform. Then, a predetermined amount of water is injected into the circular platform through a pipe until it reaches a preset height.

During this process, a certain amount of static pressure, called “head”, is applied above the surface of the sample to simulate the pressure that may be experienced in rainy weather or other similar conditions. Once the preset altitude is reached and maintained for a certain period of time, the test evaluator records the water head. By measuring the water head, the waterproof performance of the sample can be determined.