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| Sieve | |
|---|---|
| Name | Sieve |
| Caption | A hand sieve used in culinary and laboratory settings |
| Classification | Filtering tool |
| Material | Metal, mesh, fabric, synthetic polymers, wood, plastic |
| Invented | Ancient times |
| Usage | Separation, grading, filtration, refinement |
Sieve
A sieve is a hand-operated or mechanical device for separating solids by particle size through a perforated surface or mesh. It appears across many civilizations and industries, from artisanal Great Pyramid of Giza quarrying and Han dynasty metallurgy to modern United States Environmental Protection Agency laboratories and European Space Agency component fabrication. As both a tool and a concept, it intersects with practices at institutions such as the Smithsonian Institution, the British Museum, and research centers like MIT and Fraunhofer Society.
The English term derives from Old English "sife", cognate with Old Norse and Gothic terms attested in texts from Anglo-Saxon Chronicle contexts and medieval crafts recorded by scholars like Geoffrey Chaucer and Ibn Sina. Technical nomenclature varies by tradition: in United Kingdom and United States standards, terms such as "mesh", "aperture", "weave", and "wire cloth" are used in documents from bodies like the British Standards Institution and American Society for Testing and Materials. Specialized vocabularies appear in works by engineers at Siemens, metallurgists at Tata Steel, and scientists at the Max Planck Society.
Archaeological evidence from sites associated with Ancient Egypt, Indus Valley Civilization, and Neolithic Europe shows early perforated sieving tools used in food preparation and craft. Texts from Homer and agricultural treatises by Columella describe grain winnowing and sieving practices that persisted into the medieval period documented by Ibn Khaldun and Marco Polo. In Renaissance workshops tied to Florence and Venice, sieves played roles in textile finishing and pigment preparation used by artists such as Leonardo da Vinci and Titian. Colonial and industrial eras linked sieving to operations at companies like Bessemer Steel Works and mining enterprises in Johannesburg and Potosí. Contemporary art and craft movements—represented by institutions like the Museum of Modern Art and collectives such as Arts and Crafts Movement proponents—continue to use sieving in ceramics and papermaking.
Sieve construction ranges from simple woven fabrics used in Ming dynasty papermaking to precision perforated plates produced by firms like Corning Incorporated and 3M. Materials include brass, bronze, stainless steel (used by Boeing and Airbus suppliers), nylon and polyester meshes (employed by laboratories at Johns Hopkins University and University of Tokyo), and natural fibers in traditional contexts such as Kantha and Navajo textile workshops. Design parameters—aperture size, wire diameter, weave pattern, and frame rigidity—follow specifications in standards promulgated by International Organization for Standardization and national agencies like National Institute of Standards and Technology.
Categorization includes hand sieves, rotary sifters used in General Mills milling operations, vibratory sieves in Procter & Gamble production lines, and air classifiers common at Rio Tinto and BHP mining sites. Mechanisms span gravity sieving in rural mills described in Samuel Johnson era accounts, mechanical screening in Steam Age factories, ultrasonic sieving deployed by research groups at Lawrence Berkeley National Laboratory, and optical sorting systems integrated with sieving at Sony and Canon manufacturing facilities. Historical devices such as the norias and trommels are documented in engineering treatises associated with Isambard Kingdom Brunel and James Watt.
Sieves are integral to sectors including agriculture—seed cleaning at operations run by companies like Monsanto (now part of Bayer), food and beverage processing at Nestlé and Anheuser-Busch, pharmaceuticals at Pfizer and Roche, mineral processing at Vale S.A., and chemical manufacturing at BASF and Dow. Laboratories at Harvard Medical School and CNRS use micro-sieves for cell sorting and particulate analysis. In construction, sieving aggregates influences work by firms such as Vicat and Cemex, while conservation projects at Getty Conservation Institute and UNESCO rely on sieving in artifact restoration.
Performance is measured by parameters standardized by bodies like ASTM International, ISO, and national testing laboratories including TÜV and Intertek. Common metrics include particle size distribution, sieve efficiency, throughput, separation accuracy, and blinding propensity. Testing methods—sieve analysis for soil mechanics adopted by American Society of Civil Engineers, wet and dry sieving protocols used in pharmaceutical validation for European Medicines Agency filings, and laser diffraction comparisons in metrology labs at NIST—establish reproducibility and compliance for suppliers to corporations such as GE and Siemens AG.
Maintenance practices recommended by occupational health agencies like OSHA and European Agency for Safety and Health at Work include regular inspection, mesh replacement schedules, and cleaning regimes used by facilities at Unilever and hospital central sterile departments at Mayo Clinic. Safety guidance addresses entanglement hazards in mechanized sifters described in standards issued by ISO committees and accident reports reviewed by National Safety Council. Proper handling and personal protective equipment conformity are emphasized in manufacturing sites at Toyota and Ford Motor Company.
Category:Tools Category:Filtration