Integrity Test is a test used to ensure thath the filter functioning properly and has no leaks, which is very important in industries such as phamaceuticals to maintain product sterility. Common methods include the Bubble Point Test, Pressure Hold Test, and Diffusion Test.

Meanwhile, the Particle Counter Test is a test that measures the number and size of particles in air or liquids, ensuring the cleanliness of the production environment or fluids used, which is essential for maintaning product quality and safety standards in various industries such as pharmaceuticals, electronics and food.