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Standardization

From Wikipedia, the free encyclopedia
(Redirected fromNonstandard)
Implementation of technical standards based on the consensus of different parties
For other uses, seeStandardization (disambiguation).
"Nonstandard" redirects here. For other uses, seeNonstandard (disambiguation).
History of technology

Standardization (American English) orstandardisation (British English) is the process of implementing and developingtechnical standards based on the consensus of different parties that include firms, users, interest groups, standards organizations and governments.[1] Standardization can help maximizecompatibility,interoperability,safety,repeatability,efficiency, andquality. It can also facilitate a normalization of formerly custom processes.

Insocial sciences, includingeconomics,[2] the idea ofstandardization is close to the solution for acoordination problem, a situation in which all parties can realize mutual gains, but only by making mutually consistent decisions. Divergent national standards impose costs on consumers and can be a form ofnon-tariff trade barrier.[3]

Objectives

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TheEuropean Union's Regulation 1025/2012 on standardisation states that "The primary objective of standardisation is the definition of voluntary technical or quality specifications with which current or future products, production processes or services may comply."[4]

History

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Early examples

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Standard weights and measures were developed by theIndus Valley civilization.[5] The centralized weight and measure system served the commercial interest of Indus merchants as smaller weight measures were used to measure luxury goods while larger weights were employed for buying bulkier items, such as food grains etc.[6] Weights existed in multiples of a standard weight and in categories.[6]Technical standardization enabled gauging devices to be effectively used inangular measurement and measurement for construction.[7] Uniform units of length were used in the planning of towns such asLothal,Surkotada,Kalibangan,Dolavira,Harappa, andMohenjo-daro.[5] The weights and measures of the Indus civilization also reachedPersia andCentral Asia, where they were further modified.[8] Shigeo Iwata describes the excavated weights unearthed from the Indus civilization:

A total of 558 weights were excavated from Mohenjodaro, Harappa, andChanhu-daro, not including defective weights. They did not find statistically significant differences between weights that were excavated from five different layers, each measuring about 1.5 m in depth. This was evidence that strong control existed for at least a 500-year period. The 13.7-g weight seems to be one of the units used in the Indus valley. The notation was based on thebinary anddecimal systems. 83% of the weights which were excavated from the above three cities were cubic, and 68% were made ofchert.[5]

18th century attempts

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Henry Maudslay's famous early screw-cutting lathes ofc. 1797 and 1800

The implementation of standards in industry and commerce became highly important with the onset of theIndustrial Revolution and the need for high-precisionmachine tools andinterchangeable parts.

Henry Maudslay developed the first industrially practicalscrew-cutting lathe in 1800. This allowed for the standardization ofscrew thread sizes for the first time and paved the way for the practical application ofinterchangeability (an idea that was already taking hold) tonuts andbolts.[9]

Before this, screw threads were usually made by chipping and filing (that is, with skilled freehand use ofchisels andfiles).Nuts were rare; metal screws, when made at all, were usually for use in wood. Metal bolts passing through wood framing to a metal fastening on the other side were usually fastened in non-threaded ways (such as clinching or upsetting against a washer). Maudslay standardized the screw threads used in his workshop and produced sets oftaps and dies that would make nuts and bolts consistently to those standards, so that any bolt of the appropriate size would fit any nut of the same size. This was a major advance in workshop technology.[10]

National standard

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Maudslay's work, as well as the contributions of other engineers, accomplished a modest amount of industry standardization; some companies' in-house standards spread a bit within their industries.

Graphic representation of formulae for the pitches of threads of screw bolts

Joseph Whitworth's screw thread measurements were adopted as the first (unofficial) national standard by companies around the country in 1841. It came to be known as theBritish Standard Whitworth, and was widely adopted in other countries.[11][12]

This new standard specified a 55° thread angle and a thread depth of 0.640327p and a radius of 0.137329p, wherep is the pitch. The thread pitch increased with diameter in steps specified on a chart. An example of the use of the Whitworth thread is theRoyal Navy'sCrimean War gunboats. These were the first instance of "mass-production" techniques being applied to marine engineering.[9]

With the adoption of BSW by Britishrailway lines, many of which had previously used their own standard both for threads and for bolt head and nut profiles, and improving manufacturing techniques, it came to dominate British manufacturing.

American Unified Coarse was originally based on almost the same imperial fractions. The Unified thread angle is 60° and has flattened crests (Whitworth crests are rounded). Thread pitch is the same in both systems except that the thread pitch for the12 in. (inch) bolt is 12 threads per inch (tpi) in BSW versus 13 tpi in the UNC.

National standards body

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By the end of the 19th century, differences in standards between companies were making trade increasingly difficult and strained. For instance, an iron and steel dealer recorded his displeasure inThe Times: "Architects and engineers generally specify such unnecessarily diverse types of sectional material or given work that anything like economical and continuous manufacture becomes impossible. In this country no two professional men are agreed upon the size and weight of a girder to employ for given work."

TheEngineering Standards Committee was established in London in 1901 as the world's first national standards body.[13][14] It subsequently extended its standardization work and became the British Engineering Standards Association in 1918, adopting the name British Standards Institution in 1931 after receiving its Royal Charter in 1929. The national standards were adopted universally throughout the country, and enabled the markets to act more rationally and efficiently, with an increased level of cooperation.

After theFirst World War, similar national bodies were established in other countries. TheDeutsches Institut für Normung was set up in Germany in 1917, followed by its counterparts, the AmericanNational Standard Institute and the FrenchCommission Permanente de Standardisation, both in 1918.[9]

Regional standards organization

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At a regional level (e.g. Europa,the Americas, Africa, etc) or at subregional level (e.g. Mercosur, Andean Community, South East Asia, South East Africa, etc), several Regional Standardization Organizations exist (see alsoStandards Organization).

There are three regional standards organizations in Europe known as European Standardization Organizations (ESOs), or European standards bodies.CEN,CENELEC, andETSI are recognized via the EU's Regulation on Standardization (Regulation (EU) 1025/2012).[15][a] CEN develops standards for numerous kinds of products, materials, services and processes. Some sectors covered by CEN include transport equipment and services, chemicals, construction, consumer products, defence and security, energy, food and feed, health and safety, healthcare, digital sector, machinery or services.[17] The European Committee for Electrotechnical Standardization (CENELEC) is the European Standardization organization developing standards in the electrotechnical area and corresponding to the International Electrotechnical Commission (IEC) in Europe.[18]

International standards

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Main article:International standard

The first modernInternational Organization (Intergovernmental Organization), the International Telegraph Union (now theInternational Telecommunication Union), was created in 1865[19] to set international standards in order to connect national telegraph networks, as a merger of two predecessor organizations (Bern and Paris treaties) that had similar objectives, but in more limited territories.[20][21] With the advent of radiocommunication soon after its creation, the work of the ITU quickly expanded from the standardization of telegraph communications to the development of standards for telecommunications in general.

International Standards Associations

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By the mid to late 19th century, efforts were being made to standardize electrical measurement.Lord Kelvin was an important figure in this process, introducing accurate methods and apparatus for measuring electricity. In 1857, he introduced a series of effective instruments, including the quadrant electrometer, which cover the entire field of electrostatic measurement. He invented thecurrent balance, also known as theKelvin balance orAmpere balance (SiC), for theprecise specification of theampere, thestandardunit ofelectric current.[22]

R. E. B. Crompton became concerned by the large range of different standards and systems used by electrical engineering companies and scientists in the early 20th century. Many companies had entered the market in the 1890s and all chose their own settings forvoltage,frequency,current and even the symbols used on circuit diagrams. Adjacent buildings would have totally incompatible electrical systems simply because they had been fitted out by different companies. Crompton could see the lack of efficiency in this system and began to consider proposals for an international standard for electric engineering.[23]

In 1904, Crompton represented Britain at theInternational Electrical Congress, held in connection withLouisiana Purchase Exposition inSaint Louis as part of a delegation by theInstitute of Electrical Engineers. He presented a paper on standardization, which was so well received that he was asked to look into the formation of a commission to oversee the process.[24] By 1906 his work was complete and he drew up a permanent constitution for theInternational Electrotechnical Commission.[25] The body held its first meeting that year in London, with representatives from 14 countries. In honour of his contribution to electrical standardization, Lord Kelvin was elected as the body's first President.[26]

Memorial plaque of founding ISA inPrague

TheInternational Federation of the National Standardizing Associations (ISA) was founded in 1926 with a broader remit to enhance international cooperation for all technical standards and specifications. The body was suspended in 1942 duringWorld War II.

After the war, ISA was approached by the recently formed United Nations Standards Coordinating Committee (UNSCC) with a proposal to form a new global standards body. In October 1946, ISA and UNSCC delegates from 25 countries met inLondon and agreed to join forces to create the newInternational Organization for Standardization (ISO); the new organization officially began operations in February 1947.[27]

In general, each country or economy has a single recognized National Standards Body (NSB). Examples includeABNT,AENOR (now called UNE,Spanish Association for Standardization),AFNOR,ANSI,BSI,DGN,DIN,IRAM,JISC,KATS,SABS,SAC,SCC,SIS. An NSB is likely the sole member from that economy in ISO.

NSBs may be either public or private sector organizations, or combinations of the two. For example, the three NSBs of Canada, Mexico and the United States are respectively the Standards Council of Canada (SCC), the General Bureau of Standards (Dirección General de Normas, DGN), and theAmerican National Standards Institute (ANSI). SCC is a CanadianCrown Corporation, DGN is a governmental agency within the Mexican Ministry of Economy, and ANSI and AENOR are a501(c)(3) non-profit organization with members from both the private and public sectors. The determinants of whether an NSB for a particular economy is a public or private sector body may include the historical and traditional roles that the private sector fills in public affairs in that economy or the development stage of that economy.

Usage

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Standards can be:

  • de facto standards which means they are followed by informal convention or dominant usage.
  • de jure standards which are part of legally binding contracts, laws or regulations.
  • Voluntary standards which are published and available for people to consider for use.

The existence of a published standard does not necessarily imply that it is useful or correct. Just because an item is stamped with a standard number does not, by itself, indicate that the item is fit for any particular use. The people who use the item or service (engineers, trade unions, etc.) or specify it (building codes, government, industry, etc.) have the responsibility to consider the available standards, specify the correct one, enforce compliance, and use the item correctly:validation and verification.

To avoid the proliferation of industry standards, also referred to asprivate standards, regulators in the United States are instructed by their government offices to adopt "voluntary consensus standards" before relying upon "industry standards" or developing "government standards".[28] Regulatory authorities can reference voluntary consensus standards to translate internationally accepted criteria intopublic policy.[29][30]

Information exchange

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In the context ofinformation exchange, standardization refers to the process of developing standards for specific business processes using specificformal languages. These standards are usually developed in voluntary consensus standards bodies such as the United Nations Center for Trade Facilitation and Electronic Business (UN/CEFACT), the World Wide Web Consortium (W3C), theTelecommunications Industry Association (TIA), and the Organization for the Advancement of Structured Information Standards (OASIS).

There are manyspecifications that govern the operation and interaction of devices and software on theInternet, which do not use the term "standard" in their names. TheW3C, for example, publishes "Recommendations", and theIETF publishes "Requests for Comments" (RFCs). Nevertheless, these publications are often referred to as "standards", because they are the products of regular standardization processes.

Environmental protection

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See also:Import;Eco-tariff;Subsidy;Environmental impact assessment;§ Ergonomics, workplace and health; andAir quality index

Standardized product certifications such as oforganic food,buildings orpossibly sustainable seafood as well as standardized product safety evaluation and dis/approval procedures (e.g.regulation of chemicals,cosmetics andfood safety) can protect the environment.[31][32][33] This effect may depend on associated modifiedconsumer choices, strategic product support/obstruction, requirements and bans as well as their accordance with a scientific basis, the robustness and applicability of a scientific basis, whether adoption of the certifications is voluntary, and the socioeconomic context (systems ofgovernance and theeconomy), with possibly most certifications being so far mostly largely ineffective.[34][additional citation(s) needed]

Moreover, standardized scientific frameworks can enable evaluation of levels ofenvironmental protection, such as ofmarine protected areas, and serve as, potentially evolving, guides for improving, planning and monitoring the protection-quality, -scopes and -extents.[35]

Moreover, technical standards could decreaseelectronic waste[36][37][38] and reduce resource-needs such as by thereby requiring (or enabling) products to beinteroperable, compatible (with other products, infrastructures, environments, etc),durable,energy-efficient,modular,[39]upgradeable/repairable[40] andrecyclable and conform to versatile, optimal standards and protocols.

Such standardization is not limited to the domain of electronic devices like smartphones and phone chargers but could also be applied to e.g. the energy infrastructure.Policy-makers could develop policies "fostering standard design and interfaces, and promoting the re-use of modules and components across plants to develop more sustainableenergy infrastructure".[41] Computers and the Internet are some of the tools that could be used to increase practicability and reduce suboptimal results, detrimental standards andbureaucracy, which is often associated with traditional processes and results of standardization.[42] Taxes and subsidies, and funding of research and development could be used complementarily.[43] Standardized measurement is used in monitoring, reporting and verification frameworks of environmental impacts, usually of companies, for example to prevent underreporting of greenhouse gas emissions by firms.[44]

Product testing and analysis

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Further information:Product information;Life-cycle assessment;§ Ergonomics, workplace and health; andAdvertising § Criticisms

In routineproduct testing andproduct analysis results can be reported using official or informal standards. It can be done to increaseconsumer protection, to ensure safety or healthiness or efficiency or performance or sustainability of products. It can be carried out by the manufacturer, an independent laboratory, a government agency, a magazine or others on a voluntary or commissioned/mandated basis.[45][46][additional citation(s) needed]

Estimating theenvironmental impacts of food products in a standardized way – as has been done witha dataset of >57,000 foodproducts in supermarkets – could e.g. be used to inform consumers or inpolicy.[47][48] For example, such may be useful for approaches usingpersonal carbon allowances (or similar quota) or fortargeted alteration of (ultimate overall) costs.

Safety

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Further information:Safety standards
See also:Workplace safety standards

Public information symbols

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See also:ISO 7010

Public informationsymbols (e.g.hazard symbols), especially when related to safety, are often standardized, sometimeson the international level.[49]

Biosafety

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Further information:Biosafety

Standardization is also used to ensure safe design and operation of laboratories and similar potentially dangerous workplaces, e.g. to ensurebiosafety levels.[50] There is research into microbiology safety standards used in clinical and research laboratories.[51]

Defense

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In the context of defense, standardization has been defined byNATO asThe development and implementation of concepts, doctrines, procedures and designs to achieve and maintain the required levels ofcompatibility,interchangeability orcommonality in the operational, procedural, material, technical and administrative fields to attain interoperability.[52]

Ergonomics, workplace and health

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See also:Nutrient profiling,Cosmetics § Safety,Regulation of chemicals § Issues,Consumer protection, andLiving standard

In some cases, standards are being used in the design and operation ofworkplaces and products that can impact consumers' health. Some of such standards seek to ensureoccupational safety and health andergonomics. For example,chairs[49][53][54][55] (see e.g.active sitting andsteps of research) could be potentially be designed and chosen using standards that may or may not be based on adequate scientific data. Standards could reduce the variety of products and lead to convergence on fewer broad designs – which can often be efficiently mass-produced via common shared automated procedures and instruments – or formulations deemed to be the most healthy, most efficient or best compromise between healthiness and other factors. Standardization is sometimes or could also be used to ensure or increase or enable consumer health protection beyond the workplace and ergonomics such as standards in food, food production, hygiene products, tab water, cosmetics, drugs/medicine,[56] drink and dietary supplements,[57][58] especially in cases where there is robust scientific data that suggests detrimental impacts on health (e.g. of ingredients) despite being substitutable and not necessarily of consumer interest.[additional citation(s) needed]

Clothing

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Further information:Clothing sizes

Clinical assessment

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In the context of assessment, standardization may define how a measuring instrument or procedure is similar to every subjects or patients.[59]: 399 [60]: 71  For example, educational psychologist may adoptstructured interview to systematically interview the people in concern. By delivering the same procedures, all subjects is evaluated using same criteria and minimizing anyconfounding variable that reduce thevalidity.[60]: 72  Some other example includesmental status examination andpersonality test.

Social science

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In the context of social criticism andsocial science, standardization often means the process of establishing standards of various kinds and improving efficiency to handle people, their interactions, cases, and so forth. Examples include formalization of judicial procedure in court, and establishing uniform criteria for diagnosing mental disease. Standardization in this sense is often discussed along with (or synonymously to) such large-scale social changes as modernization, bureaucratization, homogenization, and centralization of society.

Customer service

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In the context ofcustomer service, standardization refers to the process of developing an international standard that enables organizations to focus on customer service, while at the same time providing recognition of success[clarification needed] through a third party organization, such as theBritish Standards Institution. An international standard has been developed byThe International Customer Service Institute.

Supply and materials management

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See also:Supply chain sustainability

In the context ofsupply chain management andmaterials management, standardization covers the process of specification and use of any item the company must buy in or make, allowable substitutions, andbuild or buy decisions.

Process

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The process of standardization can itself be standardized. There are at least four levels of standardization: compatibility,interchangeability,commonality andreference. These standardization processes create compatibility, similarity, measurement, and symbol standards.

There are typically four different techniques for standardization

Types of standardization process:

  • Emergence asde facto standard:tradition, market domination, etc.
  • Written by aStandards organization:
    • in a closed consensus process: Restricted membership and often having formal procedures for due-process among voting members
    • in a full consensus process: usually open to all interested and qualified parties and with formal procedures for due-process considerations[61]
  • Written by a government or regulatory body
  • Written by a corporation, union, trade association, etc.
  • Agile standardization. A group of entities, themselves or through an association, creates and publishes a draft version shared for public review based on actual examples of use.

Effects

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Standardization has a variety of benefits and drawbacks for firms and consumers participating in the market, and on technology and innovation.

Effect on firms

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The primary effect of standardization on firms is that the basis of competition is shifted from integrated systems to individual components within the system. Prior to standardization a company's product must span the entire system because individual components from different competitors are incompatible, but after standardization each company can focus on providing an individual component of the system.[62] When the shift toward competition based on individual components takes place, firms selling tightly integrated systems must quickly shift to a modular approach, supplying other companies with subsystems or components.[63]

Effect on consumers

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Standardization has a variety of benefits for consumers, but one of the greatest benefits is enhanced network effects. Standards increase compatibility and interoperability between products, allowing information to be shared within a larger network and attracting more consumers to use the new technology, further enhancing network effects.[64] Other benefits of standardization to consumers are reduced uncertainty, because consumers can be more certain that they are not choosing the wrong product, and reduced lock-in, because the standard makes it more likely that there will be competing products in the space.[65] Consumers may also get the benefit of being able to mix and match components of a system to align with their specific preferences.[66] Once these initial benefits of standardization are realized, further benefits that accrue to consumers as a result of using the standard are driven mostly by the quality of the technologies underlying that standard.[67]

Probably the greatest downside of standardization for consumers is lack of variety. There is no guarantee that the chosen standard will meet all consumers' needs or even that the standard is the best available option.[66] Another downside is that if a standard is agreed upon before products are available in the market, then consumers are deprived of the penetration pricing that often results when rivals are competing to rapidly increase market share in an attempt to increase the likelihood that their product will become the standard.[66] It is also possible that a consumer will choose a product based upon a standard that fails to become dominant.[68] In this case, the consumer will have spent resources on a product that is ultimately less useful to him or her as the result of the standardization process.

Effect on technology

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Much like the effect on consumers, the effect of standardization on technology and innovation is mixed.[69] Meanwhile, the various links between research and standardization have been identified,[70] also as a platform of knowledge transfer[71] and translated into policy measures (e.g.WIPANO).

Increased adoption of a new technology as a result of standardization is important because rival and incompatible approaches competing in the marketplace can slow or even kill the growth of the technology (a state known asmarket fragmentation).[72] The shift to a modularized architecture as a result of standardization brings increased flexibility, rapid introduction of new products, and the ability to more closely meet individual customer's needs.[73]

The negative effects of standardization on technology have to do with its tendency to restrict new technology and innovation. Standards shift competition from features to price because the features are defined by the standard. The degree to which this is true depends on the specificity of the standard.[74] Standardization in an area also rules out alternative technologies as options while encouraging others.[75]

See also

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Further reading

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Notes

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  1. ^Originally CEN and CELELEC were the two "European standards bodies" which were recognised to be "particularly competent" in the field of standardisation.[16]

References

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  1. ^Xie, Zongjie; Hall, Jeremy; McCarthy, Ian P.; Skitmore, Martin; Shen, Liyin (2016-02-01)."Standardization efforts: The relationship between knowledge dimensions, search processes and innovation outcomes".Technovation. Innovation and Standardization.48–49:69–78.doi:10.1016/j.technovation.2015.12.002.hdl:11385/188510.
  2. ^Blind, K. (2004).The economics of standards. Cheltenham: Edward Elgar.ISBN 978-1-84376-793-0.Archived from the original on 2016-09-27. Retrieved2016-06-16.
  3. ^Duina, Francesco; Viju-Miljusevic, Crina (2023).Standardizing the World: EU Trade Policy and the Road to Convergence. Oxford University Press.ISBN 978-0-19-768188-6.
  4. ^EUR-Lex,Regulation (EU) No 1025/2012 of the European Parliament and of the Council of 25 October 2012 on European standardisation, amending Council Directives 89/686/EEC and 93/15/EEC and Directives 94/9/EC, 94/25/EC, 95/16/EC, 97/23/EC, 98/34/EC, 2004/22/EC, 2007/23/EC, 2009/23/EC and 2009/105/EC of the European Parliament and of the Council and repealing Council Decision 87/95/EEC and Decision No 1673/2006/EC of the European Parliament and of the Council,Preamble, paragraph 1, published on 14 November 2012, accessed on 17 November 2025
  5. ^abcIwata, Shigeo (2008), "Weights and Measures in the Indus Valley",Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures (2nd edition) edited byHelaine Selin, pp. 2254–2255, Springer,ISBN 978-1-4020-4559-2.
  6. ^abKenoyer, Jonathan Mark (2006), "Indus Valley Civilization",Encyclopedia of India (vol. 2) edited by Stanley Wolpert, pp. 258–266, Thomson Gale,ISBN 0-684-31351-0
  7. ^Baber, Zaheer (1996), The Science of Empire: Scientific Knowledge, Civilization, and Colonial Rule in India, State University of New York Press,ISBN 0-7914-2919-9.
  8. ^In the third millennium BCE the Indus measuring system was further developed in the ancient regions of Iran and Afghanistan -- Iwata, 2254.
  9. ^abcWang Ping (April 2011),A Brief History of Standards and Standardization Organizations: A Chinese Perspective(PDF), EAST-WEST CENTER WORKING PAPERS, archived fromthe original(PDF) on 2019-06-12, retrieved2014-01-13
  10. ^Rolt, L. T. C. (1962).Great Engineers. Bell and Sons.
  11. ^Gilbert, K. R.; Galloway, D. F. (1978). "Machine Tools". In Singer, C.; et al. (eds.).A history of technology. Oxford: Clarendon Press.
  12. ^Lee, Sidney, ed. (1900).Dictionary of National Biography. Vol. LXI. London: Smith Elder.
  13. ^"BSI Group Annual Report and Financial Statements 2010"(PDF). p. 2.Archived(PDF) from the original on 26 September 2012. Retrieved3 April 2012.
  14. ^McWilliam., Robert C. (2001).BSI: The first hundred years. London: Thanet.ISBN 978-0-7277-3020-6.Archived from the original on 2014-02-01. Retrieved2014-01-23.
  15. ^Regulation (EU) No 1025/2012 of the European Parliament and of the Council of 25 October 2012 on European standardisation
  16. ^Publications Office of the European Union,Council Resolution of 7 May 1985 on a new approach to technical harmonization and standards, Annex II, Paragraph V.4, adopted on 7 May 1995, accessed on 18 November 2025
  17. ^Verdera, Francisco (2020)."CEN - European Committee for Standardization".GENORMA.COM.Archived from the original on 2021-11-26. Retrieved2022-01-01.
  18. ^Verdera, Francisco (2020)."CENELEC".CENELEC in Genorma.Archived from the original on 2022-01-01. Retrieved2022-01-01.
  19. ^"Overview of ITU's History".www.itu.int.Archived from the original on 2019-05-31. Retrieved2019-06-19.
  20. ^"Pre-1865 International Telegraph Agreements".www.itu.int.Archived from the original on 2019-12-25. Retrieved2019-06-19.
  21. ^"Focus on Standardization".www.itu.int.Archived from the original on 2020-01-01. Retrieved2019-06-19.
  22. ^Lindley, David (2005).Degrees Kelvin: A Tale of Genius, Invention, and Tragedy. National Academic Press. p. 293.ISBN 978-0-309-09618-8.
  23. ^"Colonel Crompton".www.iec.ch.International Electrotechnical Commission. Archived fromthe original on September 3, 2010.
  24. ^Johnson, J.; Randell, W. (1948).Colonel Crompton and the Evolution of the Electrical Industry. Longman Green.
  25. ^Dyer, Chris K.; Moseley, Patrick T.; Ogumi, Zempachi; Rand, David A. J.; Scrosati, Bruno (2010).Encyclopedia of Electrochemical Power Sources. Newnes. p. 540.ISBN 978-0-444-52745-5.
  26. ^"Report of Preliminary Meeting"(PDF).The minutes from our first meeting. London:International Electrotechnical Commission. 1906. pp. 46–47 (25–26 in PDF). Archived fromthe original(PDF) on 2 May 2019. Retrieved23 January 2014.
  27. ^Friendship among equals - Recollections from ISO's first fifty years(PDF).International Organization for Standardization. 1997. pp. 15–18.ISBN 92-67-10260-5.Archived(PDF) from the original on 26 October 2012. Retrieved26 December 2013.
  28. ^"Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities"(PDF).White House. United States Office of Management and Budget.Archived(PDF) from the original on 2017-12-19. Retrieved2021-10-02.
  29. ^Using and referencing ISO and IEC standards to support public policy. Geneva, Switzerland: ISO. 2015.ISBN 978-92-67-10633-5.Archived from the original on 2021-10-02. Retrieved2021-10-02.
  30. ^International standards and private standards. International Organization for Standardization. 2010.ISBN 978-92-67-10518-5.Archived from the original on 2021-10-06. Retrieved2021-10-03.
  31. ^Milder, Jeffrey C.; Arbuthnot, Margaret; Blackman, Allen; Brooks, Sharon E.; Giovannucci, Daniele; Gross, Lee; Kennedy, Elizabeth T.; Komives, Kristin; Lambin, Eric F.; Lee, Audrey; Meyer, Daniel; Newton, Peter; Phalan, Ben; Schroth, Götz; Semroc, Bambi; Rikxoort, Henk Van; Zrust, Michal (2015). "An agenda for assessing and improving conservation impacts of sustainability standards in tropical agriculture".Conservation Biology (in Spanish).29 (2):309–320.Bibcode:2015ConBi..29..309M.doi:10.1111/cobi.12411.hdl:2027.42/110892.ISSN 1523-1739.PMID 25363833.S2CID 31054459.
  32. ^Tayleur, Catherine; Balmford, Andrew; Buchanan, Graeme M.; Butchart, Stuart H. M.; Ducharme, Heather; Green, Rhys E.; Milder, Jeffrey C.; Sanderson, Fiona J.; Thomas, David H. L.; Vickery, Juliet; Phalan, Ben (2017)."Global Coverage of Agricultural Sustainability Standards, and Their Role in Conserving Biodiversity".Conservation Letters.10 (5):610–618.Bibcode:2017ConL...10..610T.doi:10.1111/conl.12314.ISSN 1755-263X.S2CID 88591488.
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