| # | Standards |
| 1 | ISO/IEC 20000 Information technology – Service management |
| 2 | ISO/IEC TR 20002:2012 Information technology – Telecommunications and information exchange between systems – Managed P2P: Framework |
| 3 | ISO/IEC TR 20004:2015 Information technology – Security techniques – Refining software vulnerability analysis under ISO/IEC 15408 and ISO/IEC 18045 |
| 4 | ISO/IEC 20005:2013 Information technology – Sensor networks – Services and interfaces supporting collaborative information processing in intelligent sensor networks |
| 5 | ISO/IEC 20006 Information technology for learning, education and training – Information model for competency |
| 6 | ISO/IEC 20006-1:2014 Part 1: Competency general framework and information model |
| 7 | ISO/IEC 20006-2:2015 Part 2: Proficiency level information model |
| 8 | ISO/IEC TR 20007:2014 Information technology – Cultural and linguistic interoperability – Definitions and relationship between symbols, icons, animated icons, pictograms, characters and glyphs |
| 9 | ISO/IEC 20008 Information technology – Security techniques – Anonymous digital signatures |
| 10 | ISO/IEC 20008-1:2013 Part 1: General |
| 11 | ISO/IEC 20008-2:2013 Part 2: Mechanisms using a group public key |
| 12 | ISO/IEC 20009 Information technology – Security techniques – Anonymous entity authentication |
| 13 | ISO/IEC 20009-1:2013 Part 1: General |
| 14 | ISO/IEC 20009-2:2013 Part 2: Mechanisms based on signatures using a group public key |
| 15 | ISO/IEC 20009-3:2022 Part 3: Mechanisms based on blind signatures |
| 16 | ISO/IEC 20009-4:2017 Part 4: Mechanisms based on weak secrets |
| 17 | ISO/IEC TS 20013:2015 Information technology for learning, education and training – A reference framework of e-Portfolio information |
| 18 | ISO/IEC 20016 Information technology for learning, education and training – Language accessibility and human interface equivalencies (HIEs) in e-learning applications |
| 19 | ISO/IEC 20016-1:2014 Part 1: Framework and reference model for semantic interoperability |
| 20 | ISO/IEC TR 20017:2011 Information technology – Radio frequency identification for item management – Electromagnetic interference impact of ISO/IEC 18000 interrogator emitters on implantable pacemakers and implantable cardioverter defibrillators |
| 21 | ISO 20022 Financial services – UNIversal Financial Industry message scheme |
| 22 | ISO/TS 20026:2017 Intelligent transport systems – Cooperative ITS – Test architecture |
| 23 | ISO/IEC TS 20027:2015 Biometrics interoperability profiles – Best practices for slap tenprint captures |
| 24 | ISO/IEC 20060:2010 Information technology – Open Terminal Architecture (OTA) – Virtual machine |
| 25 | ISO/IEC 20061:2001 Information technology – 12,65 mm wide magnetic tape cassette for information interchange – Helical scan recording – DTF-2 |
| 26 | ISO/IEC 20062:2001 Information technology – 8 mm wide magnetic tape cartridge for information interchange – Helical scan recording – VXA-1 format |
| 27 | ISO/PAS 20065:2016 Acoustics – Objective method for assessing the audibility of tones in noise – Engineering method |
| 28 | ISO/IEC TS 20071 Information technology – User interface component accessibility |
| 29 | ISO/IEC TS 20071-11:2012 Part 11: Guidance for alternative text for images |
| 30 | ISO/IEC TS 20071-21:2015 Part 21: Guidance on audio descriptions |
| 31 | ISO/IEC TS 20071-25:2017 Part 25: Guidance on the audio presentation of text in videos, including captions, subtitles and other on-screen text |
| 32 | ISO 20072:2009 Aerosol drug delivery device design verification—Requirements and test methods |
| 33 | ISO/IEC 20113:2004 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Specification, functional model and information flows – Make call request supplementary service |
| 34 | ISO/IEC 20114:2004 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network (PISN) – Inter-exchange signalling protocol – Make call request supplementary service |
| 35 | ISO/IEC 20115:2004 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Use of QSIG for Message Centre Access (MCA) profile standard |
| 36 | ISO/IEC 20116:2004 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Specification, functional model and information flows – Message centre monitoring and mailbox identification supplementary services |
| 37 | ISO/IEC 20117:2004 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Inter-exchange signalling protocol – Message centre monitoring and mailbox identification supplementary services |
| 38 | ISO 20121:2012 Event sustainability management systems – Requirements with guidance for use |
| 39 | ISO 20128:2006 Milk products – Enumeration of presumptive Lactobacillus acidophilus on a selective medium – Colony-count technique at 37 degrees C |
| 40 | ISO 20155:2017 Ships and marine technology – Test method of flow induced in-pipe noise source characteristics for a ship-used pump |
| 41 | ISO 20160:2006 Implants for surgery – Metallic materials – Classification of microstructures for alpha+beta titanium alloy bars |
| 42 | ISO/IEC 20161:2001 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Use of QSIG at the C reference point between a PINX and an Interconnecting Network |
| 43 | ISO/IEC 20162:2001 Information technology – Data interchange on 300 mm optical disk cartridges of type WORM (Write Once Read Many) using irreversible effects – Capacity: 30 Gbytes per cartridge |
| 44 | ISO 20228:2019 Interpreting services — Legal interpreting — Requirements |
| 45 | ISO/IEC 20243:2015 Information Technology – Open Trusted Technology ProviderTM Standard (O-TTPS) – Mitigating maliciously tainted and counterfeit products |
| 46 | ISO 20245:2017 Cross-border trade of second-hand goods |
| 47 | ISO/IEC 20246:2017 Software and systems engineering – Work product reviews |
| 48 | ISO 20252:2012 Market, opinion and social research — Vocabulary and service requirements |
| 49 | ISO 20275:2017 Financial services – Entity legal forms (ELF) |
| 50 | ISO/TR 20278:2015 Unwanted reflections from the active and inactive areas of display surfaces visible during use |
| 51 | ISO/TS 20282 Usability of consumer products and products for public use |
| 52 | ISO 20283 Mechanical vibration – Measurement of vibration on ships |
| 53 | ISO 20283-2:2008 Part 2: Measurement of structural vibration |
| 54 | ISO 20283-3:2006 Part 3: Pre-installation vibration measurement of shipboard equipment |
| 55 | ISO 20283-4:2012 Part 4: Measurement and evaluation of vibration of the ship propulsion machinery |
| 56 | ISO 20283-5:2016 Part 5: Guidelines for measurement, evaluation and reporting of vibration with regard to habitability on passenger and merchant ships |
| 57 | ISO 20301:2014 Health informatics – Health cards – General characteristics |
| 58 | ISO 20302:2014 Health informatics – Health cards – Numbering system and registration procedure for issuer identifiers |
| 59 | ISO 20308:2017 Traditional Chinese medicine – Gua Sha instruments |
| 60 | ISO 20361:2015 Liquid pumps and pump units – Noise test code – Grades 2 and 3 of accuracy |
| 61 | ISO 20381:2009 Mobile elevating work platforms – Symbols for operator controls and other displays |
| 62 | ISO 20387:2018 Biotechnology — Biobanking — General requirements for biobanking |
| 63 | ISO 20400:2017 Sustainable procurement – Guidance |
| 64 | ISO/TS 20428:2017 Health informatics – Data elements and their metadata for describing structured clinical genomic sequence information in electronic health records |
| 65 | ISO/TS 20440:2016 Health informatics – Identification of medicinal products – Implementation guide for ISO 11239 data elements and structures for the unique identification and exchange of regulated information on pharmaceutical dose forms, units of presentation, routes of administration and packaging |
| 66 | ISO/TS 20452:2007 Requirements and Logical Data Model for a Physical Storage Format (PSF) and an Application Program Interface (API) and Logical Data Organization for PSF used in Intelligent Transport Systems (ITS) Database Technology |
| 67 | ISO 20456:2017 Measurement of fluid flow in closed conduits – Guidance for the use of electromagnetic flowmeters for conductive liquids |
| 68 | ISO/TR 20461:2000 Determination of uncertainty for volume measurements made using the gravimetric method |
| 69 | ISO/TS 20477:2017 Nanotechnologies – Standard terms and their definition for cellulose nanomaterial |
| 70 | ISO 20480 Fine bubble technology – General principles for usage and measurement of fine bubbles |
| 71 | ISO 20480-1:2017 Part 1: Terminology |
| 72 | ISO 20484:2017 Non-destructive testing – Leak testing – Vocabulary |
| 73 | ISO 20488:2018 Online consumer reviews — Principles and requirements for their collection, moderation and publication |
| 74 | ISO 20498 Traditional Chinese medicine – Computerized tongue image analysis system |
| 75 | ISO 20498-2:2017 Part 2: Light environment |
| 76 | ISO/TR 20514:2005 Health informatics – Electronic health record – Definition, scope and context |
| 77 | ISO 20519:2017 Ships and marine technology – Specification for bunkering of liquefied natural gas fuelled vessels |
| 78 | ISO/TR 20526:2017 Account-based ticketing state of the art report |
| 79 | ISO/TR 20529 Intelligent transport systems – Framework for green ITS (G-ITS) standards |
| 80 | ISO/TR 20529-1:2017 Part 1: General information and use case definitions |
| 81 | ISO 20539:2019 Translation, interpreting and related technology — Vocabulary |
| 82 | ISO/TR 20545:2017 Intelligent transport systems – Vehicle/roadway warning and control systems – Report on standardisation for vehicle automated driving systems (RoVAS)/Beyond driver assistance systems |
| 83 | ISO/IEC 20563:2001 Information technology – 80 mm (1,23 Gbytes per side) and 120 mm (3,95 Gbytes per side) DVD-recordable disk (DVD-R) |
| 84 | ISO/TS 20625:2002 Electronic data interchange for administration, commerce and transport (EDIFACT) – Rules for generation of XML scheme files (XSD) on the basis of EDI(FACT) implementation guidelines |
| 85 | ISO/IEC 20648:2016 Information technology – TLS specification for storage systems |
| 86 | ISO 20653 Road vehicles – Degrees of protection (IP-Code) – Protection of electrical equipment against foreign objects, water and access |
| 87 | ISO 20669:2017 Non-destructive testing – Pulsed eddy current testing of ferromagnetic metallic components |
| 88 | ISO 20671-1:2021 Brand evaluation – Part 1: Principles and fundamentals |
| 89 | ISO 20671-2:2023 Brand evaluation – Part 2: Implementation and reporting |
| 90 | ISO 20671-3:2023 Brand evaluation – Part 3: Requirements and recommendations for brands related to geographical indications |
| 91 | ISO 20674-1:2019 Information and documentation — Transliteration of scripts in use in Thailand — Part 1: Transliteration of Akson-Thai-Noi |
| 92 | ISO 20700 Guidelines for management consultancy services |
| 93 | ISO 20712 Water safety signs and beach safety flags |
| 94 | ISO 20712-1:2008 Part 1: Specifications for water safety signs used in workplaces and public areas |
| 95 | ISO 20712-2:2007 Part 2: Specifications for beach safety flags – Colour, shape, meaning and performance |
| 96 | ISO 20712-3:2014 Part 3: Guidance for use |
| 97 | ISO 20725:2004 Textile machinery – Condensers for cotton spinning – Vocabulary and principles of construction |
| 98 | ISO 20726:2004 Textile machinery – Hopper feeders for cotton spinning – Vocabulary and principles of construction |
| 99 | ISO 20727:2004 Textile machinery – Mixing bale openers for cotton spinning – Vocabulary and principles of construction |
| 100 | ISO/IEC 20741:2017 Systems and software engineering – Guideline for the evaluation and selection of software engineering tools |
| 101 | ISO 20743:2013 Textiles – Determination of antibacterial activity of textile products |
| 102 | ISO/IEC TR 20748 Information technology for learning, education and training – Learning analytics interoperability |
| 103 | ISO/IEC TR 20748-1:2016 Part 1: Reference model |
| 104 | ISO/IEC TR 20748-2:2017 Part 2: System requirements |
| 105 | ISO 20771:2020 Legal translation — Requirements |
| 106 | ISO 20775:2009 Information and documentation – Schema for holdings information |
| 107 | ISO 20785 Dosimetry for exposures to cosmic radiation in civilian aircraft |
| 108 | ISO 20785-1:2012 Part 1: Conceptual basis for measurements |
| 109 | ISO 20785-2:2011 Part 2: Characterization of instrument response |
| 110 | ISO 20785-3:2015 Part 3: Measurements at aviation altitudes |
| 111 | ISO/IEC 20802 Information technology – Open data protocol (OData) v4.0 |
| 112 | ISO/IEC 20802-1:2016 Part 1: Core |
| 113 | ISO/IEC 20802-2:2016 Part 2: OData JSON Format |
| 114 | ISO 20807:2004 Non-destructive testing – Qualification of personnel for limited application of non-destructive testing |
| 115 | ISO/TR 20811:2017 Optics and photonics – Lasers and laser-related equipment – Laser-induced molecular contamination testing |
| 116 | ISO 20815 Petroleum, petrochemical and natural gas industries – Production assurance and reliability management |
| 117 | ISO 20816 Mechanical vibration – Measurement and evaluation of machine vibration |
| 118 | ISO 20816-1:2016 Part 1: General guidelines |
| 119 | ISO 20816-2:2017 Part 2: Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min and 3 600 r/min |
| 120 | ISO/TR 20824:2007 Ophthalmic instruments – Background for light hazard specification in ophthalmic instrument standards |
| 121 | ISO/TR 20831:2017 Health informatics – Medication management concepts and definitions |
| 122 | ISO/TS 20836:2005 Microbiology of food and animal feeding stuffs – Polymerase chain reaction (PCR) for the detection of food-borne pathogens – Performance testing for thermal cyclers |
| 123 | ISO 20837:2006 Microbiology of food and animal feeding stuffs – Polymerase chain reaction (PCR) for the detection of food-borne pathogens – Requirements for sample preparation for qualitative detection |
| 124 | ISO 20838:2006 Microbiology of food and animal feeding stuffs – Polymerase chain reaction (PCR) for the detection of food-borne pathogens – Requirements for amplification and detection for qualitative methods |
| 125 | ISO 20900:2019 ISO 20900:2019 Intelligent transport systems — Partially automated parking systems (PAPS) — Performance requirements and test procedures |
| 126 | ISO 20906:2009 Acoustics – Unattended monitoring of aircraft sound in the vicinity of airports |
| 127 | ISO/IEC TR 20913:2016 Information technology – Data centres – Guidelines on holistic investigation methodology for data centre key performance indicators |
| 128 | ISO 20916:2019 In vitro diagnostic medical devices — Clinical performance studies using specimens from human subjects — Good study practice |
| 129 | ISO/IEC 20919:2016 Information technology – Linear Tape File System (LTFS) Format Specification |
| 130 | ISO/IEC 20922:2016 Information technology – Message Queuing Telemetry Transport (MQTT) v3.1.1 |
| 131 | ISO/IEC 20926:2009 Software and systems engineering – Software measurement – IFPUG functional size measurement method 2009 |
| 132 | ISO/IEC 20933:2016 Information technology – Distributed Application Platforms and Services (DAPS) – Access Systems |
| 133 | ISO/IEC TR 20943 Information technology – Procedures for achieving metadata registry content consistency |
| 134 | ISO/IEC TR 20943-1:2003 Part 1: Data elements |
| 135 | ISO/IEC TR 20943-3:2004 Part 3: Value domains |
| 136 | ISO/IEC TR 20943-5:2013 Part 5: Metadata mapping procedure |
| 137 | ISO/IEC TR 20943-6:2013 Part 6: Framework for generating ontologies |
| 138 | ISO/IEC 20944 Information technology – Metadata Registries Interoperability and Bindings (MDR-IB) |
| 139 | ISO/IEC 20944-1:2013 Part 1: Framework, common vocabulary, and common provisions for conformance |
| 140 | ISO/IEC 20944-2:2013 Part 2: Coding bindings |
| 141 | ISO/IEC 20944-3:2013 Part 3: API bindings |
| 142 | ISO/IEC 20944-4:2013 Part 4: Protocol bindings |
| 143 | ISO/IEC 20944-5:2013 Part 5: Profiles |
| 144 | ISO 20957 Stationary training equipment — Safety requirements and test methods |
| 145 | ISO 20957-1:2013 Stationary training equipment — Part 1: General safety requirements and test methods |
| 146 | ISO 20957-2:2005 Stationary training equipment — Part 2: Strength training equipment, additional specific safety requirements and test methods |
| 147 | ISO 20957-4:2016 Stationary training equipment — Part 4: Strength training benches, additional specific safety requirements and test methods |
| 148 | ISO 20957-5:2016 Stationary training equipment — Part 5: Stationary exercise bicycles and upper body crank training equipment, additional specific safety requirements and test methods |
| 149 | ISO 20957-6:2005 Stationary training equipment — Part 6: Treadmills, additional specific safety requirements and test methods |
| 150 | ISO 20957-7:2005 Stationary training equipment — Part 7: Rowing machines, additional specific safety requirements and test methods |
| 151 | ISO 20957-8:2017 Stationary training equipment — Part 8: Steppers, stairclimbers and climbers — Additional specific safety requirements and test methods |
| 152 | ISO 20957-9:2016 Stationary training equipment — Part 9: Elliptical trainers, additional specific safety requirements and test methods |
| 153 | ISO 20957-10:2017 Stationary training equipment — Part 10: Exercise bicycles with a fixed wheel or without freewheel |
| 154 | ISO 20958:2013 Condition monitoring and diagnostics of machine systems – Electrical signature analysis of three-phase induction motors |
| 155 | ISO/IEC 20968:2002 Software engineering – Mk II Function Point Analysis – Counting Practices Manual |
| 156 | ISO/IEC 20970:2002 Information technology – Programming languages, their environments and system software interfaces – JEFF file format |
| 157 | ISO/IEC 21000 Information technology – Multimedia framework (MPEG-21) |
| 158 | ISO 21001:2018 Educational organizations – Management systems for educational organizations – Requirements with guidance for use (EOMS) |
| 159 | ISO 21047:2009 Information and documentation – International Standard Text Code (ISTC) |
| 160 | ISO 21063:2017 Prosthetics and orthotics – Soft orthoses – Uses, functions, classification and description |
| 161 | ISO 21064:2017 Prosthetics and orthotics – Foot orthotics – Uses, functions classification and description |
| 162 | ISO 21065:2017 Prosthetics and orthotics – Terms relating to the treatment and rehabilitation of persons having a lower limb amputation |
| 163 | ISO 21067 Packaging – Vocabulary |
| 164 | ISO 21067-1:2016 Part 1: General terms |
| 165 | ISO 21067-2:2015 Part 2: Packaging and the environment terms |
| 166 | ISO/TR 21074:2016 Application of ISO 5725 for the determination of repeatability and reproducibility of precision tests performed in standardization work for chemical analysis of steel |
| 167 | ISO/TR 21089:2004 Health informatics – Trusted end-to-end information flows |
| 168 | ISO 21090:2011 Health informatics – Harmonized data types for information interchange |
| 169 | ISO 21091:2013 Health informatics – Directory services for healthcare providers, subjects of care and other entities |
| 170 | ISO 21101:2014 Adventure tourism – Safety management systems – Requirements |
| 171 | ISO/TR 21102:2013 Adventure tourism – Leaders – Personnel competence |
| 172 | ISO 21103:2014 Adventure tourism – Information for participants |
| 173 | ISO/IEC 21118:2012 Information technology – Office equipment – Information to be included in specification sheets – Data projectors |
| 174 | ISO 21127:2014 Information and documentation – A reference ontology for the interchange of cultural heritage information |
| 175 | ISO/TS 21144:2016 Ergonomics of human-system interaction – Electronic paper display – Indoor use |
| 176 | ISO 21148:2017 Cosmetics – Microbiology – General instructions for microbiological examination |
| 177 | ISO 21149:2017 Cosmetics – Microbiology – Enumeration and detection of aerobic mesophilic bacteria |
| 178 | ISO 21150:2015 Cosmetics – Microbiology – Detection of Escherichia coli |
| 179 | ISO 21183 Light conveyor belts |
| 180 | ISO 21183-2:2005 Part 2: List of equivalent terms |
| 181 | ISO 21187:2004 Milk – Quantitative determination of bacteriological quality – Guidance for establishing and verifying a conversion relationship between routine method results and anchor method results |
| 182 | ISO 21188:2006 Public key infrastructure for financial services – Practices and policy framework |
| 183 | ISO 21210:2012 Intelligent transport systems – Communications access for land mobiles (CALM) – IPv6 Networking |
| 184 | ISO 21212:2008 Intelligent transport systems – Communications access for land mobiles (CALM) – 2G Cellular systems |
| 185 | ISO 21213:2008 Intelligent transport systems – Communications access for land mobiles (CALM) – 3G Cellular systems |
| 186 | ISO 21214:2015 Intelligent transport systems – Communications access for land mobiles (CALM) – Infra-red systems |
| 187 | ISO 21215:2010 Intelligent transport systems – Communications access for land mobiles (CALM) – M5 |
| 188 | ISO 21216:2012 Intelligent transport systems – Communication access for land mobiles (CALM) – Millimetre wave air interface |
| 189 | ISO 21217:2014 Intelligent transport systems – Communications access for land mobiles (CALM) – Architecture |
| 190 | ISO 21218:2013 Intelligent transport systems – Communications access for land mobiles (CALM) – Access technology support |
| 191 | ISO/TS 21219 Intelligent transport systems – Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) |
| 192 | ISO 21247:2005 Combined accept-zero sampling systems and process control procedures for product acceptance |
| 193 | ISO 21254 Lasers and laser-related equipment – Test methods for laser-induced damage threshold |
| 194 | ISO 21254-1:2011 Part 1: Definitions and general principles |
| 195 | ISO 21254-2:2011 Part 2: Threshold determination |
| 196 | ISO 21254-3:2011 Part 3: Assurance of laser power (energy) handling capabilities |
| 197 | ISO/TR 21254-4:2011 Part 4: Inspection, detection and measurement |
| 198 | ISO 21289:2008 Mechanical vibration and shock – Parameters to be specified for the acquisition of vibration data |
| 199 | ISO 21298:2017 Health informatics – Functional and structural roles |
| 200 | ISO/IEC 21320 Information technology – Document Container File |
| 201 | ISO 21300:2019 Traditional Chinese medicine — Guidelines and specification for Chinese materia medica |
| 202 | ISO/IEC 21320-1:2015 Part 1: Core |
| 203 | ISO 21401:2018 Tourism and related services — Sustainability management system for accommodation establishments — Requirements |
| 204 | ISO/IEC 21407:2001 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Specification, functional model and information flows – Simple dialog supplementary service |
| 205 | ISO/IEC 21408:2003 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Inter-exchange signalling protocol – Simple dialog supplementary service |
| 206 | ISO/IEC 21409:2001 Information technology – Telecommunications and information exchange between systems – Corporate telecommunication networks – Signalling interworking between QSIG and H.323 – Generic functional protocol for the support of supplementary services |
| 207 | ISO/IEC 21410:2001 Information technology – Telecommunications and information exchange between systems – Corporate telecommunication networks – Signalling interworking between QSIG and H.323 – Call transfer supplementary services |
| 208 | ISO/IEC 21411:2001 Information technology – Telecommunications and information exchange between systems – Corporate telecommunication networks – Signalling interworking between QSIG and H.323 – Call diversion supplementary services |
| 209 | ISO 21413:2005 Manual methods for the measurement of a groundwater level in a well |
| 210 | ISO/TR 21414:2016 Hydrometry – Groundwater – Surface geophysical surveys for hydrogeological purposes |
| 211 | ISO/IEC TS 21425:2017 Programming languages – C++ Extensions for ranges |
| 212 | ISO 21439:2009 Clinical dosimetry – Beta radiation sources for brachytherapy |
| 213 | ISO/IEC/IEEE 21450:2010 Information technology – Smart transducer interface for sensors and actuators – Common functions, communication protocols, and Transducer Electronic Data Sheet (TEDS) formats |
| 214 | ISO/IEC/IEEE 21451 Information technology – Smart transducer interface for sensors and actuators |
| 215 | ISO/IEC/IEEE 21451-1:2010 Part 1: Network Capable Application Processor (NCAP) information model |
| 216 | ISO/IEC/IEEE 21451-2:2010 Part 2: Transducer to microprocessor communication protocols and Transducer Electronic Data Sheet (TEDS) formats |
| 217 | ISO/IEC/IEEE 21451-4:2010 Part 4: Mixed-mode communication protocols and Transducer Electronic Data Sheet (TEDS) formats |
| 218 | ISO/IEC/IEEE 21451-7:2011 Part 7: Transducer to radio frequency identification (RFID) systems communication protocols and Transducer Electronic Data Sheet (TEDS) formats |
| 219 | ISO/IEC 21481:2012 Information technology – Telecommunications and information exchange between systems – Near Field Communication Interface and Protocol -2 (NFCIP-2) |
| 220 | ISO 21482:2007 Ionizing-radiation warning – Supplementary symbol |
| 221 | ISO 21484:2017 Nuclear Energy – Fuel technology – Determination of the O/M ratio in MOX pellets by the gravimetric method |
| 222 | ISO 21485:2013 Textile machinery – Draw frame for cotton spinning – Vocabulary and principles of construction |
| 223 | ISO 21500 Guidance on project management |
| 224 | ISO 21501-1:2009 Determination of particle size distribution — Single particle light interaction methods — Part 1: Light scattering aerosol spectrometer |
| 225 | ISO 21501-2:2019 Determination of particle size distribution — Single particle light interaction methods — Part 2: Light scattering liquid-borne particle counter |
| 226 | ISO 21501-3:2019 Determination of particle size distribution — Single particle light interaction methods — Part 3: Light extinction liquid-borne particle counter |
| 227 | ISO 21501-4:2018 Determination of particle size distribution — Single particle light interaction methods — Part 4: Light scattering airborne particle counter for clean spaces |
| 228 | ISO 21502:2020 Project, programme and portfolio management — Guidance on project management |
| 229 | ISO 21503:2022 Project, programme and portfolio management — Guidance on programme management |
| 230 | ISO 21504:2015 Project, programme and portfolio management – Guidance on portfolio management |
| 231 | ISO 21505:2017 Project, programme and portfolio management – Guidance on governance |
| 232 | ISO 21527 Microbiology of food and animal feeding stuffs – Horizontal method for the enumeration of yeasts and moulds |
| 233 | ISO 21527-1:2008 Part 1: Colony count technique in products with water activity greater than 0,95 |
| 234 | ISO 21527-2:2008 Part 2: Colony count technique in products with water activity less than or equal to 0,95 |
| 235 | ISO 21528 Microbiology of the food chain – Horizontal method for the detection and enumeration of Enterobacteriaceae |
| 236 | ISO 21528-1:2017 Part 1: Detection of Enterobacteriaceae |
| 237 | ISO 21528-2:2017 Part 2: Colony-count technique |
| 238 | ISO 21531:2009 Dentistry – Graphical symbols for dental instruments |
| 239 | ISO 21534:2007 Non-active surgical implants – Joint replacement implants – Particular requirements |
| 240 | ISO 21535:2007 Non-active surgical implants – Joint replacement implants – Specific requirements for hip-joint replacement implants |
| 241 | ISO 21536:2007 Non-active surgical implants – Joint replacement implants – Specific requirements for knee-joint replacement implants |
| 242 | ISO/IEC TS 21544:2018 Programming languages – Extensions to C++ for modules |
| 243 | ISO/TS 21547:2010 Health informatics – Security requirements for archiving of electronic health records – Principles |
| 244 | ISO/TR 21548:2010 Health informatics – Security requirements for archiving of electronic health records – Guidelines |
| 245 | ISO 21549 Health informatics – Patient healthcard data |
| 246 | ISO 21549-1:2013 Part 1: General structure |
| 247 | ISO 21549-2:2014 Part 2: Common objects |
| 248 | ISO 21549-3:2014 Part 3: Limited clinical data |
| 249 | ISO 21549-4:2014 Part 4: Extended clinical data |
| 250 | ISO 21549-5:2015 Part 5: Identification data |
| 251 | ISO 21549-6:2008 Part 6: Administrative data |
| 252 | ISO 21549-7:2016 Part 7: Medication data |
| 253 | ISO 21549-8:2010 Part 8: Links |
| 254 | ISO 21567:2004 Microbiology of food and animal feeding stuffs – Horizontal method for the detection of Shigella spp. |
| 255 | ISO/TS 21609:2014 Road vehicles – (EMC) guidelines for installation of aftermarket radio frequency transmitting equipment |
| 256 | ISO 21649:2006 Needle-free injectors for medical use – Requirements and test methods |
| 257 | ISO 21667:2010 Health informatics – Health indicators conceptual framework |
| 258 | ISO/TR 21707:2008 Intelligent transport systems – Integrated transport information, management and control – Data quality in ITS systems |
| 259 | ISO/TR 21730:2007 Health informatics – Use of mobile wireless communication and computing technology in healthcare facilities – Recommendations for electromagnetic compatibility (management of unintentional electromagnetic interference) with medical devices |
| 260 | ISO/HL7 21731:2014 Health informatics – HL7 version 3 – Reference information model – Release 4 |
| 261 | ISO 21748:2017 Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty evaluation |
| 262 | ISO/TS 21749:2005 Measurement uncertainty for metrological applications – Repeated measurements and nested experiments |
| 263 | ISO 21807:2004 Microbiology of food and animal feeding stuffs – Determination of water activity |
| 264 | ISO/IEC 21827:2008 Information technology – Security techniques – Systems Security Engineering – Capability Maturity Model® (SSE-CMM®) |
| 265 | ISO 21849:2006 Aircraft and space – Industrial data – Product identification and traceability |
| 266 | ISO 21871:2006 Microbiology of food and animal feeding stuffs – Horizontal method for the determination of low numbers of presumptive Bacillus cereus – Most probable number technique and detection method |
| 267 | ISO 21872 Microbiology of the food chain – Horizontal method for the determination of Vibrio spp. |
| 268 | ISO 21872-1:2017 Part 1: Detection of potentially enteropathogenic Vibrio parahaemolyticus, Vibrio cholerae and Vibrio vulnificus |
| 269 | ISO/IEC 21888:2001 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Specification, functional model and information flows – Call Identification and Call Linkage Additional Network Feature |
| 270 | ISO/IEC 21889:2001 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Inter-exchange signalling protocol – Call Identification and Call Linkage Additional Network Feature |
| 271 | ISO/IEC TR 21890:2001 Information technology – Telecommunications and information exchange between systems – Interoperation of PISNs with IP networks |
| 272 | ISO/TR 21932:2013 Sustainability in buildings and civil engineering works – A review of terminology |
| 273 | ISO 21940 Mechanical vibration – Rotor balancing |
| 274 | ISO 21940-2:2017 Part 2: Vocabulary |
| 275 | ISO/TR 21941:2017 Financial services – Third-party payment service providers |
| 276 | ISO 21969:2009 High-pressure flexible connections for use with medical gas systems |
| 277 | ISO 21987:2017 Ophthalmic optics – Mounted spectacle lenses |
| 278 | ISO/IEC 21989:2002 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Specification, functional model and information flows – Short message service |
| 279 | ISO/IEC 21990:2002 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Inter-exchange signalling protocol – Short message service |
| 280 | ISO/IEC 21991:2002 Information technology – Telecommunications and information exchange between systems – Corporate Telecommunication Networks – Signalling interworking between QSIG and H.323 – Call completion supplementary services |
| 281 | ISO/IEC 21992:2003 Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Mapping functions for the tunnelling of QSIG through IP networks |
| 282 | ISO 21998:2020 Interpreting services — Healthcare interpreting — Requirements and recommendations |
