1. PRECISION SIEVE: This 20cm test sieve features a chromeplated frame with 304 stainless steel mesh, offering a wide range of aperture sizes from 4 (5mm) to 600 (0.025mm), enabling precise separation of various materials for your laboratory analyses. 2. DURABLE CONSTRUCTION: The doublelayered, reinforced frame prevents deformation even under intensive use. The smoothly finished edges prevent injuries, and the chromeplated surface provides corrosion resistance. 3. VERSATILE APPLICATION: Suitable for separating and analyzing plastics, metals, fruits, screws, grains, vegetables, sand, soil, and many other materials—an indispensable tool for accurate sample testing. 4. WIDE RANGE OF USES: Applicable in numerous fields such as food industry, textiles, shipbuilding, metallurgy, petroleum, water treatment, pharmaceuticals, and mineral processing, making it a versatile laboratory instrument.