Filters

thumb|312x312px|Reverse osmosis desalination plant in Barcelona, Spain

form of carbon processed to have small, low-volume pores that increase the surface area

water purification process

thumb|300x300px|Vitreous enamel|Enamelled colander (collection Museum of Industry Ghent) A colander or cullender is a kitchen utensil perforated with holes used to strain foods such as pasta or to rinse vegetables. The perforations of the colander allow liquid to drain through while retaining the solids inside. It is sometimes called a pasta strainer. A sieve, with much finer mesh, is also used for straining.

membrane which will allow certain molecules or ions to pass through it by diffusion

320px|thumb|right| Entrance to a cleanroom with no air shower thumb|right| Cleanroom used for the production of microsystems. The yellow (red-green) lighting is necessary for [[photolithography, to prevent unwanted exposure of photoresist to light of shorter wavelengths.]] thumb|right| Cleanroom from outside thumb|right| Cleanroom for microelectronics manufacturing with [[fan filter units installed in the ceiling grid]] thumb|right| Cleanroom cabin for precision measuring tools thumb| Typical cleanroom head garment

device to remove contaminants from the air

filter material with homogeneously sized pores in the nanometer range

filter designed to remove contaminants from oil

semi-permeable paper barrier

filter used to strain fuel in fuel systems

A hydrocyclone showing the paths of fluid flow.|thumbHydrocyclones are a type of cyclonic separators that separate product phases mainly on basis of differences in gravity with aqueous solutions as the primary feed fluid.

thumb|Process diagram nanofiltration Nanofiltration is a membrane filtration process that uses nanometer sized pores through which particles smaller than about 1–10 nanometers pass through the membrane. Nanofiltration membranes have pore sizes of about 1–10 nanometers, smaller than those used in microfiltration and ultrafiltration, but a slightly bigger than those in reverse osmosis. Membranes used are predominantly polymer thin films. It is used to soften, disinfect, and remove impurities from water, and to purify or separate chemicals such as pharmaceuticals.

separation process, specially employed by solid/liquid separation using the principle of pressure drive

noise protection filter for microphones

thumb|Fouling on a heat exchanger in a steam [[power plant]] thumb|Condenser (steam turbine)|Condenser tube with residues of [[biofouling (cut open)]]

fast filtration technique

type of air filter

system that removes redundant or unwanted information at a semantic level

upright|thumb|A tea strainer made of metal mesh thumb|right|Metal screen mesh thumb|A watch with a stainless steel mesh watch band|bracelet

filtering method that uses a bed of activated carbon to remove contaminants and impurities

A baghouse, also known as a baghouse filter, bag filter, or fabric filter is an air pollution control device and dust collector that removes particulates entrained in gas released from commercial processes. Power plants, steel mills, pharmaceutical producers, food manufacturers, chemical producers and other industrial companies often use baghouses to control emission of air pollutants. Baghouses came into widespread use in the late 1970s after the invention of high-temperature fabrics (for use in the filter media) capable of withstanding temperatures over .

Urban large-scale air purifier

heated bath used in a laboratory

air filtration efficacy measurement

specialized enclosed antechambers which are incorporated as entryways of clean rooms and other controlled environments to reduce particle contamination

British laboratory equipment making-company now part of GE Healthcare

a drum rotating in a tub of water to be filtered