1. Shielding: This 20cm chromeplated mesh screen features 24 mesh options (4 600) for accurate material separation. The doublelayer thickened frame maintains shape during continuous use while providing consistent results for sample inspection and testing. Whether you are working with fine powders of 600 mesh (0.025mm) or larger particles at 4 mesh (5mm), this test screen delivers reliable performance for laboratory, industrial, or pharmaceutical applications. 2. Construction: Made with a chromeplated frame and 304 stainless steel mesh bottom for strength and durability. The rugged design provides exceptional wear resistance, toughness, and strength to withstand repeated use in demanding environments. The smooth, carefully finished edges prevent hand injuries during handling, making this strainer both functional and safe for operators working with various materials in test or production settings. 3. Versatile Applications: Suitable for sifting and separating numerous materials such as plastic, aluminum, zinc, metal ash, fruit, screws, medicine, grains, dehydrated vegetables, sand, soil, and more. This multipurpose test screen serves as an essential tool in various industries such as food processing, textiles, shipbuilding, metallurgy, petroleum, coal, water treatment, pharmaceuticals, and mineral processing—delivering consistent separation results for quality control. 4. Professional Specifications: Each colander measures 20cm in diameter with a silver chromeplated frame that resists corrosion. Available in multiple mesh sizes with precise openings ranging from 5mm (4 mesh) to 0.025mm (600 mesh), allowing for exact particle size separation and analysis. The standardized dimensions and carefully calibrated mesh openings make this strainer compatible with standard testing protocols in the laboratory and industry.