Introduction
Industrial filtration is not just about choosing a micron rating. Good filtration design starts with understanding what needs to be removed, why it matters to the process, and how media, flow, pressure, and solids behavior interact in the real world.This article introduces the core concepts behind process filtration, from Darcy’s Law and particle-removal mechanisms to surface versus depth filtration and the practical limits of micron ratings. The goal is to give engineers, operators, and buyers a more useful framework for selecting and optimizing filtration systems.