A sieve analysis (or gradation test) is a practice or procedure used to assess the particle size distribution (also called gradation) of materials, such as aggregates, sands, clays, drugs, minerals, cement, coal, soil, manufactured powders, grain and seeds.

• Test Sieve:

Dazhen test sieves are designed for accurate and efficient particle analysis/gradation test. One sieve or a nested column of sieves can be used in hand sieving or sieve shaker method.