A sieve, fine mesh strainer, or sift, is a device for separating wanted elements from unwanted material or for controlling the

particle size Particle size is a notion introduced for comparing dimensions of solid particles ('' flecks''), liquid particles ('' droplets''), or gaseous particles ('' bubbles''). The notion of particle size applies to particles in colloids, in ecology, in ...

distribution of a sample, using a screen such as a

woven Woven fabric is any textile formed by weaving. Woven fabrics are often created on a loom, and made of many threads woven on a warp and a weft. Technically, a woven fabric is any fabric made by interlacing two or more threads at right angles to on ...

mesh A mesh is a barrier made of connected strands of metal, fiber, or other flexible or ductile materials. A mesh is similar to a web or a net in that it has many attached or woven strands. Types * A plastic mesh may be extruded, oriented, exp ...

net Net or net may refer to: Mathematics and physics * Net (mathematics), a filter-like topological generalization of a sequence * Net, a linear system of divisors of dimension 2 * Net (polyhedron), an arrangement of polygons that can be folded up ...

perforated A perforation is a small hole in a thin material or web. There is usually more than one perforation in an organized fashion, where all of the holes collectively are called a ''perforation''. The process of creating perforations is called perfor ...

sheet material. The word ''sift'' derives from ''sieve''. In cooking, a sifter is used to separate and break up clumps in dry ingredients such as flour, as well as to aerate and combine them. A strainer (see

Colander A colander (or cullender) is a kitchen utensil used to strain foods such as pasta or to rinse vegetables. The perforated nature of the colander allows liquid to drain through while retaining the solids inside. It is sometimes also called a past ...

), meanwhile, is a form of sieve used to separate suspended

solids Solid is one of the four fundamental states of matter (the others being liquid, gas, and plasma). The molecules in a solid are closely packed together and contain the least amount of kinetic energy. A solid is characterized by structural ...

from a liquid by filtration.

Industrial strainer

Some industrial strainers available are simplex basket strainers, duplex basket strainers, T-strainers and Y-strainers. Simple basket strainers are used to protect valuable or sensitive equipment in systems that are meant to be shut down temporarily. Some commonly used strainers are

bell mouth strainer A bell is a directly struck idiophone percussion instrument. Most bells have the shape of a hollow cup that when struck vibrates in a single strong strike tone, with its sides forming an efficient resonator. The strike may be made by an intern ...

foot valve strainer The foot ( : feet) is an anatomical structure found in many vertebrates. It is the terminal portion of a limb which bears weight and allows locomotion. In many animals with feet, the foot is a separate organ at the terminal part of the leg mad ...

s, basket strainers. Most processing industries (mainly pharmaceutical, coatings and liquid food industries) will opt for a self-cleaning strainer instead of a basket strainer or a simplex strainer due to limitations of simple filtration systems. The self-cleaning strainers or filters are more efficient and provide an automatic filtration solution.

Sieving

Sieving is a simple technique for separating particles of different sizes. A sieve such as used for sifting flour has very small holes. Coarse particles are separated or broken up by grinding against one another and the screen openings. Depending upon the types of particles to be separated, sieves with different types of holes are used. Sieves are also used to separate stones from sand. Sieving plays an important role in food industries where sieves (often vibrating) are used to prevent the contamination of the product by foreign bodies. The design of the industrial sieve is of primary importance here.

Triage In medicine, triage () is a practice invoked when acute care cannot be provided for lack of resources. The process rations care towards those who are most in need of immediate care, and who benefit most from it. More generally it refers to prio ...

sieving refers to grouping people according to their severity of injury.

Wooden sieves

The mesh in a wooden sieve might be made from wood or wicker. Use of wood to avoid contamination is important when the sieve is used for sampling. Henry Stephens, in his ''Book of the Farm'', advised that the

withe Withe is a surname. Notable people with the surname include: * Chris Withe (born 1962), English footballer * Jason Withe (born 1971), English footballer and manager *Peter Withe Peter Withe (born 30 August 1951) is an English former football ...

s of a wooden

riddle A riddle is a statement, question or phrase having a double or veiled meaning, put forth as a puzzle to be solved. Riddles are of two types: ''enigmas'', which are problems generally expressed in metaphorical or allegorical language that requ ...

or sieve be made from fir or

willow Willows, also called sallows and osiers, from the genus ''Salix'', comprise around 400 speciesMabberley, D.J. 1997. The Plant Book, Cambridge University Press #2: Cambridge. of typically deciduous trees and shrubs, found primarily on moist so ...

with

American elm ''Ulmus americana'', generally known as the American elm or, less commonly, as the white elm or water elm, is a species of elm native to eastern North America, naturally occurring from Nova Scotia west to Alberta and Montana, and south to F ...

being best. The rims would be made of fir,

oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...

or, especially, beech.

US standard test sieve series

sieve analysis A sieve analysis (or gradation test) is a practice or procedure used in civil engineering and chemical engineering to assess the particle size distribution (also called ''gradation'') of a granular material by allowing the material to pass through ...

(or gradation test) is a practice or procedure used (commonly used in

civil engineering Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, airports, sewa ...

or sedimentology) to assess the particle size distribution (also called gradation) of a granular material. Sieve sizes used in combinations of four to eight sieves.

Other types

Chinois A chinois (; ) is a conical sieve with an extremely fine mesh. It is used to strain custards, purees, soups, and sauces, producing a very smooth texture. It can also be used to dust food with a fine layer of powdered ingredient. Etymology '' ...

, or conical sieve used as a strainer, also sometimes used like a

food mill A food mill (also called passatutto, purée sieve, moulinette, mouli légumes, or passe-vite) is a food preparation utensil for mashing and sieving soft foods invented in Brussels in 1928 by Victor Simon. Typically, a food mill consists of ...

Cocktail strainer A cocktail strainer is a metal bar accessory used to remove ice from a mixed drink as it is poured into the serving glass. A type of sieve, the strainer is placed over the mouth of the glass or shaker in which the beverage was prepared; small ...

, a bar accessory *

, a (typically) bowl-shaped sieve used as a strainer in cooking * Flour sifter or bolter, used in flour production and baking * Graduated sieves, used to separate varying small sizes of material, often soil, rock or minerals *

Mesh A mesh is a barrier made of connected strands of metal, fiber, or other flexible or ductile materials. A mesh is similar to a web or a net in that it has many attached or woven strands. Types * A plastic mesh may be extruded, oriented, exp ...

strainer, or just "strainer", usually consisting of a fine metal mesh screen on a metal frame ** Laundry strainer, to drain boiling water from laundry removed from a

Wash copper A wash copper, copper boiler or simply copper is a wash house boiler, generally made of galvanised iron, though the best sorts are made of copper. In the inter-war years they came in two types. The first is built into a brickwork furnace and was fo ...

, usually with a wooden frame to facilitate manual handling with hot contents * *

Riddle A riddle is a statement, question or phrase having a double or veiled meaning, put forth as a puzzle to be solved. Riddles are of two types: ''enigmas'', which are problems generally expressed in metaphorical or allegorical language that requ ...

, used for soil *

Spider Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species ...

, used in Chinese cooking *

Tamis A tamis (pronounced "tammy", also known as a drum sieve, or chalni in Indian cooking) is a kitchen utensil, shaped somewhat like a snare drum, that acts as a strainer, grater, or food mill. A tamis has a cylindrical edge, made of metal or w ...

, also known as a drum sieve *

Tea strainer A tea strainer is a type of strainer that is placed over or in a teacup to catch loose tea leaves. When tea is brewed in the traditional manner in a teapot, the tea leaves are not contained in teabags; rather, they are freely suspended in ...

, specifically intended for use when making tea * ''

Zaru A is generally a flat or shallow basket made from bamboo used in the preparation and presentation of Japanese cuisine. It also has variations made of plastic or metal similar to a strainer, sieve or colander. ''Zaru'' are air dried after use ...

'', or bamboo sieve, used in Japanese cooking ;Other uses * "Sieve" is a common term used in

trash-talk Trash talk is a form of insult usually found in sports events, although it is not exclusive to sports or similarly characterized events. It is often used to intimidate the opposition and/or make them less confident in their abilities as to win e ...

referring to a

goaltender In ice hockey, the goaltender (commonly referred to as the goalie) is the player responsible for preventing the hockey puck from entering their team's net, thus preventing the opposing team from scoring. The goaltender mostly plays in or near t ...

ice hockey Ice hockey (or simply hockey) is a team sport played on ice skates, usually on an ice skating rink with lines and markings specific to the sport. It belongs to a family of sports called hockey. In ice hockey, two opposing teams use ice h ...

who lets in too many goals

References

External links

* * * {{Authority control Cookware and bakeware Material-handling equipment Solid-solid separation