Sieve

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Not to be confused with molecular sieve.

A sieve or sifter, is a simple device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample.

A strainer is a form of sieve used to separate solids from liquid, or to wash solids.

General

Sieves consist of a metal (galvanized steel, stainless steel, aluminium, brass) or plastic wire mesh attached to a short cylinder or to a ring with handle (often used for strainers). Mesh size depends on the type of sieve.

Availability

Sieves and strainers can be bought from most hardware stores and kitchen stores.

Lab sieves can be bought from lab suppliers, though sieves with small size mesh are expensive.

Projects

  • Make fine (metal) powders
  • Sieve analysis

Handling

Sieves must be perfectly dry in order to be used when sifting fine powders. Most sieves cannot handle corrosive reagents, so avoid using them in corrosive environments.

References

Relevant Sciencemadness threads