Mesh explains the number of openings per square inch in the screen. For example: 50 mesh: about 50 openings per inch in each direction (roughly 50×50 holes per square inch) 500 mesh: about 500 openings per inch in each direction (roughly 500×500 holes per square inch) The higher the mesh number, the smaller the holes. In addition to hole size, mesh also indicates the size of particles that can pass through. The higher the mesh number, the smaller the particle size that is filtered. Packaging note: The gauze is supplied folded, with each fold approximately 98 cm long. Recommended filtration ranges by application: Wine and tea impurities: 150–200 mesh. For results, filter first with 100 mesh, then filter again with 200 mesh. Soybean milk: 100–150 mesh. Milk or juice: 200–250 mesh. Paint filtration: 80–200 mesh. For ground paint use 80–100 mesh; for general paint use 150–200 mesh. Use scenarios Home kitchen: filter wine or tea to remove fine sediments; prepare soybean milk by passing through 100–150 mesh to achieve desired texture. Small workshop: filter milk or juice to remove particles; filter coatings or paints with the specified mesh ranges to achieve the needed clarity. DIY projects: use the appropriate mesh to separate fine particulates from liquids or coatings, ensuring clean liquids for consumption or finishing.