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combustible gas laser

combustible gas laser, Total:410 items.

In the international standard classification, combustible gas laser involves: Analytical chemistry, Fuels, Environmental testing, Optoelectronics. Laser equipment, Insulating fluids, Protection against fire, Electrical equipment for working in special conditions, Semiconductor devices, On-board equipment and instruments, Fluid storage devices, Products of the chemical industry, Small craft, Mining equipment, Metrology and measurement in general, Natural gas, Shipbuilding and marine structures in general, Internal combustion engines, Medical equipment, Mining and quarrying, Measurement of fluid flow, Equipment for the chemical industry, Industrial automation systems, Air quality, Protective equipment, Alarm and warning systems, Domestic safety, Electrical and electronic testing, Petroleum, petroleum products and natural gas handling equipment, Occupational safety. Industrial hygiene, Explosion protection, Petroleum products in general, Linear and angular measurements, Protection against dangerous goods, Pipeline components and pipelines, Electromagnetic compatibility (EMC), Domestic, commercial and industrial heating appliances, Wind turbine systems and other alternative sources of energy, Installations in buildings, Burners. Boilers, Valves, Welding, brazing and soldering, Measurement of volume, mass, density, viscosity, Vocabularies, Geology. Meteorology. Hydrology, Protection against electric shock, Electrical engineering in general, Wood-based panels, Railway rolling stock.


Group Standards of the People's Republic of China, combustible gas laser

  • T/ZZB 019-2015 Tunable laser gas analyzer
  • T/CEC 705-2022 Tunable Laser Spectroscopic Absorption Method for Rapid Measurement of Gas Humidity Used in Electric Power
  • T/SBX 024-2019 Fixed combustible gas detector
  • T/SBX 14-2018 Portable Combustible Gas Detector
  • T/CGAS 013-2021 Underground Well Room Combustible Gas Monitoring Device
  • T/YSG 001-2022 Specifications for Field Calibration of Combustible Gas Detection and Alarms
  • T/CPCIF 0261-2023 Design specification of flare system for low calorific value combustible gases
  • T/CSTE 0007-2020 Determination of Trace Carbon Monoxide in Hydrogen Fuel - The Method of Mid-infrared Laser Spectroscopy for PEMFC
  • T/FSGCA 2-2022 Guidelines for selection, installation and use of combustible gas alarm devices for industrial and commercial users of urban gas
  • T/JFPA 0008-2021 Combustible gas detectors for lithiium iron phosphate battery energy storage power station

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, combustible gas laser

  • GB/T 25476-2010 Tunable laser gas analyzer
  • GB/T 15301-1994 General specification for gas lasers
  • GB/T 12082-1989 Letter symbols for gas lasers
  • GB/T 12083-2012 Power supply series for gas laser
  • GB/T 12083-1989 Power supply series for gas lasers
  • GB 5332-1985 Method of test for ignition temperature of flammable liquids and gases
  • GB/T 5332-1985 Method of test for ignition temperature of flammable liquids and gases
  • GB/T 5332-2007 Method of test for ignition temperature of flammable liquids and gases
  • GB 15322.4-2003 Combustible gas detectors Part 4: Point type detectors for combustible man-made gas
  • GB 16808-2008 Combustible gas alarm control units
  • GB 15322.5-2003 Combustible gas detectors Part 5: Self-contained detectors for combustible man-made gas
  • GB 15322.6-2003 Combustible gas detectors Part 6: Portable detectors for combustible man-made gas
  • GB/T 14288-1993 Determination of minimum ignition energy of combustible gases and flammable liquid vapors
  • GB 15322.1-2003 Combustible gas detectors Part1: point type detectors for 0~100%LEL Combustible gas
  • GB/T 803-1989 Determination of explosion indices of combustible gases in air
  • GB 15322.2-2003 Combustible gas detectors Part 2: Self-contained detectors for 0~100%LEL Combustible gas
  • GB 15322.3-2003 Combustible gas detectors Part 3: portable detectors for 0~100%LEL combustible gas
  • GB/T 12474-1990 Method of test for explosion limits of combustible gases in air
  • GB/T 803-2008 Method for Determination of Explosive Index of Combustible Gases in Air
  • GB/T 12474-2008 Method for Determination of Explosive Limits of Combustible Gases in Air
  • GB/T 17726-1999 Small craft--Electrical devices--Protection against ignition of surrounding flammable gases
  • GB 50493-2009 Specification for design of combustible gas and toxic gas detection and alarm for petrochemical industry
  • GB/T 50493-2019 Petrochemical industry combustible gas and toxic gas detection alarm design standards
  • GB/T 21847-2008 Chemical products for industrial use.Determination of inflammation of gases
  • GB 15322-1994 Technical requirements and test methods for combustible gas detectors
  • GB/T 42368-2023 Method for Determination of Explosive Limits of Combustible Gas (Steam) under High Temperature and High Pressure Conditions
  • GB/T 20936.1-2022 Gas detectors for explosive atmospheres Part 1: Performance requirements for combustible gas detectors
  • GB/T 21849-2008 Chemical products for industrial use.Determination of inflammation of gases formed after hydrolysis of solids ans liquids
  • GB/T 26073-2010 Safety guideline for the evaluation of toxic and flammable gas detection systems
  • GB 16808-1997 Technical requirements and test methods for combustibic gas alarm control units
  • GB 20936.4-2008 Electrical apparatus for the detection and measurement of flammable gases.Part 4:Performance requirements for group Ⅱ apparatus indicating a volume fraction up to 100% gas
  • GB 20936.1-2007 Electrical apparatus for the detection and measurement of flammable gases- Part 1: General requirement and test methods
  • GB/T 20936.1-2007 Electrical apparatus for the detection and measurement of flammable gases—Part 1:General requirement and test methods

GM Europe, combustible gas laser

Henan Provincial Standard of the People's Republic of China, combustible gas laser

British Standards Institution (BSI), combustible gas laser

  • BS EN 61207-7:2014 Expression of performance of gas analyzers. Tuneable semiconductor laser gas analyzers
  • BS EN 61207-7:2013 Expression of performance of gas analyzers. Tuneable semiconductor laser gas analyzers
  • BS EN 28846:1993 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases
  • BS EN ISO 8846:2017 Small craft. Electrical devices. Protection against ignition of surrounding flammable gases
  • BS EN 720-1:1999 Transportable gas cylinders - Gases and gas mixtures - Properties of pure gases
  • BS EN 50241-2:1999 Specification for open path apparatus for the detection of combustible or toxic gases and vapours - Performance requirements for apparatus for the detection of combustible gases
  • BS EN 50270:2007 Electromagnetic compatibility. Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • BS EN 50270:1999 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • BS EN 60079-29-1:2016+A11:2022 Explosive atmospheres - Gas detectors. Performance requirements of detectors for flammable gases
  • BS EN 60079-29-1:2016+A1:2022 Explosive atmospheres - Gas detectors. Performance requirements of detectors for flammable gases
  • BS PAS 42:2002 Method of test for establishing the efficiency of decorative fuel effect gas fires
  • BS EN 50270:2006 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • BS EN 50270:2015 Electromagnetic compatibility. Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • BS EN 16898:2022 Safety and control devices for gas burners and gas burning appliances. Gas filters having a maximum working pressure up to and including 600 kPa
  • BS EN ISO 13340:2001 Transportable gas cylinders - Cylinder valves for non-refillable cylinders - Specification and prototype testing
  • BS EN 12584:1999 Imperfections in oxyfuel flame cuts, laser beam cuts and plasma cuts - Terminology
  • BS EN 12584:1999(2009) Imperfections in oxyfuel flame cuts, laser beam cuts and plasma cuts - Terminology
  • 20/30413442 DC BS EN 16898. Safety and control devices for gas burners and gas burning appliances. Gas filters having a maximum working pressure up to and including 600 kPa
  • BS 6020-5:1982 Instruments for the detection of combustible gases - Specification for performance requirements for Group II instruments reading up to 100% gas
  • 19/30398559 DC BS EN 50270. Electromagnetic compatibility. Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • 23/30433255 DC BS EN ISO 2612. Analysis of natural gas. Biomethane. Determination of ammonia content by Tuneable Diode Laser Absorption Spectroscopy
  • 15/30311432 DC BS EN 16898. Safety and control devices for gas burners and gas burning appliances. Gas filters having a maximum working pressure up to and including 600 kPa
  • BS EN 60079-29-2:2015 Tracked Changes. Explosive atmospheres. Gas detectors. Selection, installation, use and maintenance of detectors for flammable gases and oxygen
  • BS 6020-1:1981 Instruments for the detection of combustible gases - Specification for general requirements and test methods
  • BS EN ISO 17658:2015 Welding. Imperfections in oxyfuel flame cuts, laser beam cuts and plasma cuts. Terminology
  • 19/30388761 DC BS EN 60079-29-1 AMD1. Explosive atmospheres. Part 29-1. Gas detectors. Performance requirements of detectors for flammable gases
  • BS EN 61779-1:2000 Electrical apparatus for the detection and measurement of flammable gases - General requirements and test methods
  • BS EN 50194:2000 Electrical apparatus for the detection of combustible gases in domestic premises. Test methods and performance requirements
  • BS EN 50054:1991 Electrical apparatus for the detection and measurement of combustible gases. General requirements and test methods
  • BS EN 50054:1999 Electrical apparatus for the detection and measurement of combustible gases. General requirements and test methods
  • BS EN 50058:1999 Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100% (V/V) gas
  • BS EN 50402:2017 Tracked Changes. Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen. Requirements on the functional safety of gas detection systems
  • BS EN 50271:2002 Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen - Requirements and tests for apparatus using software and/or digital technologies

Military Standard of the People's Republic of China-General Armament Department, combustible gas laser

  • GJB/Z 43.1-1993 Military laser device series spectral gas laser
  • GJB 3185-1998 General specifications for combustible gas monitoring and alarm devices on ships
  • GJB 3185A-2021 General specifications for combustible gas monitoring and alarm devices on ships

Professional Standard - Electron, combustible gas laser

  • SJ 20531-1995 General specification for gas lasers
  • SJ 1871-1981 Measurement conditions for gas laser devices
  • SJ 20762-1999 Measurement methods for paramters of gas lasers
  • SJ 1878-1981 Methods of discrimination for transverse mode of gas laser devices
  • SJ 1877-1981 Methods of measurement for excursion of beam direction of gas laser devices
  • SJ 1881-1981 Methods of measurement for polarization of gas laser devices
  • SJ 1874-1981 Methods of measurement for tube voltage drop of gas laser devices
  • SJ 1879-1981 Methods of measurement for angle of beam divergence of gas laser devices
  • SJ 1872-1981 Methods of measurement for firing voltage of gas laser devices
  • SJ 1875-1981 Methods of measurement for output power of gas laser devices
  • SJ 1880-1981 Methods of measurement for frequency drift of gas laser devices
  • SJ 1873-1981 Methods of measurement for optimum working current of gas laser devices
  • SJ 3250-1989 Methods of measurement for chromium concentration in semi-insulation Gallium arsenide by infra-red absorption
  • SJ 1876-1981 Methods of measurement for stability of output power for gas laser devices

Association Francaise de Normalisation, combustible gas laser

  • NF C46-251-7*NF EN 61207-7:2014 Expression of performance of gas analyzers - Part 7 : tunable semiconductor laser gas analyzers
  • NF EN 61207-7:2014 Expression des performances des analyseurs de gaz - Partie 7 : analyseurs de gaz laser à semiconducteurs accordables
  • NF J95-022/A1:2001 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases.
  • NF C23-541-2:2005 Specification for open path apparatus for the detection of combustible or toxic gases and vapours - Part 2 : performance requirements for apparatus for the detection of combustible gases.
  • NF J95-022:1993 Small craft. Electrical devices. Protection against ignition of surrounding flammable gases.
  • NF EN 50270:2015 Compatibilité électromagnétique - Appareils de détection et de mesure de gaz combustible, de gaz toxique et d'oxygène
  • NF C23-570:2000 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen.
  • FD D30-505-1:1996 Appliances using combustible gases. Guidelines for testing of gas appliances. Part 1 : general rules.
  • NF E29-645-2:1997 Transportable gas cylinders. Gases and gas mixtures. Part 2 : determination of flammability and oxidizing ability of gases and gas mixtures.
  • NF C23-570:2007 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen.
  • NF C23-570*NF EN 50270:2015 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • NF C23-579-29-1:2008 Explosive atmospheres - Part 29-1 : gas detectors - Performance requirements of detectors for flammable gases.
  • NF EN ISO 10156:2017 Bouteilles à gaz - Gaz et mélanges de gaz - Détermination du potentiel d'inflammabilité et d'oxydation pour le choix des raccords de sortie de robinets
  • NF X43-030-1*NF ISO 28902-1:2012 Air quality - Environmental meteorology - Part 1 : ground-based remote sensing of visual range by lidar.
  • NF C23-596*NF EN 50402:2017 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of gas detection systems
  • NF C23-579-29-1*NF EN 60079-29-1:2016 Explosive atmospheres - Part 29-1 : gas detectors - Performance requirements of detectors for flammable gases
  • NF EN 60079-29-1:2016 Atmosphères explosives - Partie 29-1 : détecteurs de gaz - Exigences d'aptitude à la fonction des détecteurs de gaz inflammables
  • NF EN 60079-29-1/A1:2022 Atmosphères explosives - Partie 29-1 : détecteurs de gaz - Exigences d'aptitude à la fonction des détecteurs de gaz inflammables
  • NF EN 60079-29-1/A11:2022 Atmosphères explosives - Partie 29-1 : détecteurs de gaz - Exigences d'aptitude à la fonction des détecteurs de gaz inflammables
  • NF S62-002:1991 Explosion protection systems. Part 2 : determination of explosion indices of combustible gases in air.
  • NF C23-544*NF EN 50244:2016 Electrical apparatus for the detection of combustible gases in domestic premises - Guide on the selection, installation, use and maintenance
  • NF EN 50402:2017 Matériel électrique pour la détection et la mesure des gaz ou vapeurs combustibles ou toxiques ou de l'oxygène - Exigences relatives à la sécurité fonctionnelle des systèmes de détection de gaz
  • NF C23-558:1992 Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for group II apparatus indicating up to 100 per cent (V/V) gas.
  • NF C23-579-29-2*NF EN 60079-29-2:2018 Explosive atmospheres - Part 29-2 : gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
  • NF EN 60079-29-2:2018 Atmosphères explosives Partie 29-2 : détecteurs de gaz - Sélection, installation, utilisation et maintenance des détecteurs de gaz inflammables et d'oxygène
  • NF C23-579-10-2:2009 Explosive atmospheres - Part 10-2 : classification of areas - Combustible dust atmospheres.
  • NF C23-579-10-2*NF EN 60079-10-2:2015 Explosive atmospheres - Part 10-2 : classification of areas - Combustible dust atmospheres

International Electrotechnical Commission (IEC), combustible gas laser

  • IEC 61207-7:2013 Expression of performance of gas analyzers - Part 7: Tuneable semiconductor laser gas analyzers
  • IEC 61207-7:2013/COR1:2015 Expression of performance of gas analyzers - Part 7: Tuneable semiconductor laser gas analyzers; Corrigendum 1
  • IEC 61779-6:1999 Electrical apparatus for the detection and measurement of flammable gases - Part 6: Guide for the selection, installation, use and maintenance of apparatus for the detection and measurement of flammable gases
  • IEC 60079-29-1:2016/AMD1:2020 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
  • IEC 60079-29-1:2020 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
  • IEC 60079-29-1:2016+AMD1:2020 CSV Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
  • IEC TR3 60079-20:1996 Electrical apparatus for explosive gas atmospheres - Part 20: Data for flammable gases and vapours, relating to the use of electrical apparatus
  • IEC TS 60079-40:2015 Explosive atmospheres - Part 40: Requirements for process sealing between flammable or combustible process fluids and electrical systems
  • IEC 60079-29-1:2016/ISH2:2019 Interpretation Sheet 2 - Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
  • IEC 60079-29-1:2016/ISH1:2019 Interpretation Sheet 1 - Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases

未注明发布机构, combustible gas laser

  • BS EN 61207-7:2013(2015) Expression of performance of gas analyzers Part 7 : Tuneable semiconductor laser gas analyzers
  • BS EN 50270:2015(2016) Electromagnetic compatibility — Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • BS EN 720-2:1997 Transportable gas cylinders - Gases and gas mixtures Part 2. Determination of flammability and oxidizing ability of gases and gas mixtures
  • BS 6942-2:1989(2000) Design and construction of small kits for oxy - fuel gas welding and allied processes — Part 2 : Specification for kits using refillable gas containers for oxygen and fuel gas

German Institute for Standardization, combustible gas laser

  • DIN EN 61207-7:2015-07 Expression of performance of gas analyzers - Part 7: Tuneable semiconductor laser gas analyzers (IEC 61207-7:2013); German version EN 61207-7:2013 / Note: Applies in conjunction with DIN EN 61207-1 (2011-04).
  • DIN 51853:2011 Testing of fuel gases - Sampling
  • DIN EN 28846:1993 Small craft; electrical devices; protection against ignition of surrounding flammable gases (ISO 8846:1990); German version EN 28846:1993
  • DIN EN 61207-7:2015 Expression of performance of gas analyzers - Part 7: Tuneable semiconductor laser gas analyzers (IEC 61207-7:2013); German version EN 61207-7:2013
  • DIN EN 50270:2007 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen; German version EN 50270:2006
  • DIN 8541-2:1987 Hoses for welding, cutting and allied processes; hoses with protective cover for use with fuel gas, oxygen and other non-combustible gases
  • DIN EN 28846:1993-10 Small craft; electrical devices; protection against ignition of surrounding flammable gases (ISO 8846:1990); German version EN 28846:1993
  • DIN EN 50270:2015 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen; German version EN 50270:2015
  • DIN EN 4681-003:2023-04 Aerospace series - Cables, electric, general purpose, with conductors in aluminium or copper-clad aluminium - Part 003: AD family, Single, UV laser printable - Product standard; English version prEN 4681-003:2023 / Note: Date of issue 2023-03-10
  • DIN EN ISO 12460-3/A1:2022-10 Wood-based panels - Determination of formaldehyde release - Part 3: Gas analysis method - Amendment 1: Laser spectroscopy (ISO 12460-3:2020/DAM 1:2022); German and English version EN ISO 12460-3:2020/prA1:2022 / Note: Date of issue 2022-08-26*Intended ...
  • DIN ISO 28902-1:2012 Air quality - Environmental meteorology - Part 1: Ground-based remote sensing of visual range by lidar (ISO 28902-1:2012)
  • DIN CEN/TS 45545-7:2009 Railway applications - Fire protection on railway vehicles - Part 7: Fire safety requirements for flammable liquid and flammable gas installations; German version CEN/TS 45545-7:2009
  • DIN 8541-2:2021 Hoses for welding, cutting and allied processes - Part 2: Hoses with coatings for fuel gas, oxygen and other non combustible gases
  • DIN 8541-2:2021-08 Hoses for welding, cutting and allied processes - Part 2: Hoses with coatings for fuel gas, oxygen and other non combustible gases / Note: DIN 8541-2 (1987-12) remains valid alongside this standard until 2022-01-31.

ES-UNE, combustible gas laser

  • UNE-EN 61207-7:2013 Expression of performance of gas analyzers - Part 7: Tuneable semiconductor laser gas analyzers (Endorsed by AENOR in January of 2014.)
  • UNE-EN 61207-7:2013/AC:2015 Expression of performance of gas analyzers - Part 7: Tuneable semiconductor laser gas analyzers (Endorsed by AENOR in September of 2015.)
  • UNE-EN 50270:2016/AC:2016-08 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • UNE-EN 50270:2016 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • UNE-EN 60079-29-4:2011 CORR 1:2011 Explosive atmospheres -- Part 29-4: Gas detectors - Performance requirements of open path detectors for flammable gases
  • UNE-EN 50402:2017 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of gas detection systems (Endorsed by Asociación Española de Normalización in June of 2017.)
  • UNE-EN 50244:2018 Electrical apparatus for the detection of combustible gases in domestic premises - Guide on the selection, installation, use and maintenance
  • UNE-EN 60079-29-2:2016 Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen

国家市场监督管理总局、中国国家标准化管理委员会, combustible gas laser

  • GB 15322.4-2019 Combustible gas detectors—Part 4: Line-type optical beam combustible gas detectors for industrial and commercial use
  • GB 15322.2-2019 Combustible gas detectors-Part 2:Household combustible gas detectors
  • GB 15322.1-2019 Combustible gas detectors—Part 1: Point-type combustible gas detectors for industrial and commercial use
  • GB 15322.3-2019 Combustible gas detectors—Part 3: Portable combustible gas detectors for industrial and commercial use
  • GB/T 38301-2019 Determination of limiting oxygen concentration (LOC) of flammable gases and vapours

Professional Standard - Machinery, combustible gas laser

  • JB/T 6859-1993 Basic parameters of gas lasers
  • JB/T 10406-2004 Internal combustion engines - Laser surface hardened cylinder liners - Specifications
  • JB/T 14418-2023 Internal combustion engines — Laser scribing cylinder liners — Technical specification
  • JB/T 5082.6-2014 Internal combustion engines.Cylinder liners.Part 6: Technology specifications of laser-quench cylinder liners

Underwriters Laboratories (UL), combustible gas laser

CZ-CSN, combustible gas laser

European Committee for Electrotechnical Standardization(CENELEC), combustible gas laser

  • EN 61207-7:2013 Expression of performance of gas analyzers - Part 7: Tuneable semiconductor laser gas analyzers
  • FprEN 50270:2021 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • EN 50270:2015 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • EN 60079-29-2:2015 Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen

Hebei Provincial Standard of the People's Republic of China, combustible gas laser

RU-GOST R, combustible gas laser

  • GOST 24428-1980 Gas lasers. General specifications
  • GOST 25763-1983 Gas-discharge sources of high-intensity optical radiation for laser pumping. Basic dimensions
  • GOST R 57614-2017 Natural combustible gas. Energy determination
  • GOST R 52087-2003 Liquefied hydrocarbon fuel gases. Specifications
  • GOST 10062-1975 Natural combustible gases. Method for determination of specific heat of combustion
  • GOST R 53763-2009 Natural combustible gases. Determination of water dew point temperature
  • GOST R ISO 13736-2010 Sombustible liquids. Determination of Abel closed-cup flash point
  • GOST EN 50270-2012 Electromagnetic compatibility. Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • GOST R 53762-2009 Natural combustible gases. Determination of hydrocarbon dew point temperature
  • GOST R 52140-2003 Electrical apparatus for the detection and measurement of flammable gases. Part 5. Performance requirements for group II apparatus indicating a volume fraction up to 100 % gas
  • GOST 27540-1987 Thermochemical signalling devices of combustible gases and vapours. General specifications
  • GOST R 8.922-2016 State system for ensuring the traceability of measurements. Gas analyzers and gas alarm devices for determination of combustible gases and vapors in working zone air. Testing method
  • GOST 8.618-2013 State system for ensuring the traceability of measurements. Gas analyzers and gas alarm devices for determination of combustible gases and vapors in working zone air. Verification procedure
  • GOST R 51330.19-1999 Electrical apparatus for explosive gas atmospheres. Part 20. Data for flammable gases and vapours relating to the use of electrical apparatus
  • GOST 30852.19-2002 Electrical apparatus for explosive gas atmospheres. Part 20. Data for flammable gases and vapours, relating to the use of electrical apparatus
  • GOST R EN 50194-2008 Electrical apparatus for the detection of combustible gases in domestic premises. General requirements and control methods

U.S. Air Force, combustible gas laser

Korean Agency for Technology and Standards (KATS), combustible gas laser

  • KS C 6566-2002(2022) Gas sensors for detecting flammable gas
  • KS C 6566-2002(2017) Gas sensors for detecting flammable gas
  • KS E 4116-2006 Hot wire type gas alarms
  • KS E 4111-1996(2011) INTERFEROMETER TYPE INSTRUMENTAL GAS DETECTOR FOR INFLAMMABLE GAS
  • KS E 4116-2006(2011) Hot wire type gas alarms
  • KS C 6590-2007(2018) Performance requirements for combustible gas detectors
  • KS V ISO 8846:2004 Small craft-Electrical devices-Protection against ignition of surrounding flammable gases
  • KS V ISO 8846:2014 Small craft — Electrical devices — Protection against ignition of surrounding flammable gases
  • KS E 4115-2006 Interferometer type gas alarms
  • KS E 4115-2006(2011) Interferometer type gas alarms
  • KS E 4115-1980 Interferometer type gas alarms
  • KS C 6590-2007 Performance requirements for combustible gas detectors
  • KS I ISO 28902-1:2022 Air quality — Environmental meteorology — Part 1: Ground-based remote sensing of visual range by lidar
  • KS C 6591-2007 Installation, operation and maintenance of combustible gas detection instruments
  • KS P ISO 7396-1:2008 Medical gas pipeline systems-Part 1:Pipeline systems for compressed medical gases and vacuum
  • KS C IEC 61779-6:2003 Electrical apparatus for the detection and measurement of flammable gases-Part 6:Guide for the selection, installation, use and maintenance of apparatus for the detection and measurement of flammable gases
  • KS C 6598-2007 Electrical apparatus for the detection of combustible gases in domestic premises-Test methods and performance requirements
  • KS C 6591-2007(2018) Installation, operation and maintenance of combustible gas detection instruments
  • KS C IEC 61779-6-2003(2018)
  • KS C 6598-2007(2018) Electrical apparatus for the detection of combustible gases in domestic premises-Test methods and performance requirements
  • KS C IEC 60079-29-1:2012 Explosive atmospheres-Part 29-1:Gas detectors-Performance requirements of detectors for flammable gases
  • KS C IEC 60079-29-1-2012(2022) Explosive atmospheres-Part 29-1:Gas detectors-Performance requirements of detectors for flammable gases
  • KS C IEC 60079-29-1-2012(2017) Explosive atmospheres-Part 29-1:Gas detectors-Performance requirements of detectors for flammable gases
  • KS C 6599-2007 Installation, operation and maintenance of combustible gases detection instruments in domestic premises
  • KS C 6599-2007(2018) Installation, operation and maintenance of combustible gases detection instruments in domestic premises
  • KS C IEC 60079-29-2:2012 Explosive atmospheres-Part 29-2:Gas detectors-Selection, installation, use and maintenance of detectors for flammable gases and oxygen
  • KS C IEC 60079-29-2-2012(2022) Explosive atmospheres-Part 29-2:Gas detectors-Selection, installation, use and maintenance of detectors for flammable gases and oxygen

Military Standards (MIL-STD), combustible gas laser

National Metrological Verification Regulations of the People's Republic of China, combustible gas laser

  • JJG 693-2004 the Alarmer Detectors of Combustible Gas
  • JJG 693-2011 Verification Regulation of Alarmer Detectors of Combustible Gas

American Gas Association, combustible gas laser

  • AGA Z223.1-2009 National Fuel Gas Code Tenth Edition; Z22309; Incorporating Amendment: 2009
  • AGA INT-OFG-2002 Interchangeability of Other Fuel Gases with Natural Gases -Research Bulletin 36

工业和信息化部, combustible gas laser

  • HG/T 5898-2022 Mixed gas carbon dioxide-nitrogen/helium for laser welding
  • HG/T 5227-2017 Fluidized catalytic cracking regeneration flue gas laser gas analyzer

Instrument Society of America (ISA), combustible gas laser

  • ISA TR12.13.01-1999 Flammability Characteristics of Combustible Gases and Vapors
  • ISA TR84.00.07-2010 Guidance on the Evaluation of Fire, Combustible Gas and Toxic Gas System Effectiveness
  • ISA 12.27.01-2011 Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids
  • ISA 12.27.01-2003 Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids
  • ISA 12.13.04-2007 Performance Requirements for Open Path Combustible Gas Detectors (First Edition)
  • ISA 12.13.01-2003 Performance Requirements for Combustible Gas Detectors [Superseded: ISA RP12.13 PT II]

HU-MSZT, combustible gas laser

Japanese Industrial Standards Committee (JISC), combustible gas laser

  • JIS M 7653:1996 Portable type combustible gas detector
  • JIS M 7602:1993 Interferometer type instrumental gas detector for inflammable gas
  • JIS F 0811:2002 Small craft -- Electrical devices -- Protection against ignition of surrounding flammable gases

European Committee for Standardization (CEN), combustible gas laser

  • EN ISO 8846:2017 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases
  • EN 50270:2006 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • EN 720-2:1996 Transportable Gas Cylinders - Gases and Gas Mixtures - Part 2: Determination of Flammability and Oxidizing Ability of Gases and Gas Mixtures
  • EN ISO 13340:2001 Transportable Gas Cylinders - Cylinder Valves for Non-Refillable Cylinders - Specification and Prototype Testing ISO 13340: 2001
  • EN 50054:1998 Electrical Apparatus for the Detection and Measurement of Combustible Gases - General Requirements and Test Methods
  • EN 50054:1991 Electrical apparatus for the detection and measurement of combustible gases; general requirements and test methods
  • EN 28846:1993 Small Craft - Electrical Devices - Protection Against Ignition of Surrounding Flammable Gases (Incorporates Amendment A1: 2000)
  • prEN ISO 2612 Analysis of natural gas - Biomethane - Determination of ammonia content by Tuneable Diode Laser Absorption Spectroscopy (ISO/DIS 2612:2023)
  • EN 1839:2017 Determination of the explosion limits and the limiting oxygen concentration(LOC) for flammable gases and vapours
  • EN ISO 17658:2015 Welding - Imperfections in oxyfuel flame cuts@ laser beam cuts and plasma cuts - Terminology

International Organization for Standardization (ISO), combustible gas laser

  • ISO 8846:1990 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases
  • ISO 7396:1987 Non-flammable medical gas pipeline systems
  • ISO/FDIS 2612:2023 Analysis of natural gas — Biomethane — Determination of ammonia content by tuneable diode laser absorption spectroscopy
  • ISO/DIS 2612 Analysis of natural gas — Biomethane — Determination of ammonia content by Tuneable Diode Laser Absorption Spectroscopy
  • ISO 28902-1:2012 Air quality - Environmental meteorology - Part 1: Ground-based remote sensing of visual range by lidar
  • ISO 17658:2002 Welding - Imperfections in oxyfuel flame cuts, laser beam cuts and plasma cuts - Terminology
  • ISO 12460-3:2020/DAmd 1 Wood-based panels — Determination of formaldehyde release — Part 3: Gas analysis method — Amendment 1: Laser spectroscopy
  • BS EN ISO/IEC 80079-20-2:2016 Explosive atmospheres. Material characteristics. Combustible dusts test methods

ISA - International Society of Automation, combustible gas laser

IN-BIS, combustible gas laser

Taiwan Provincial Standard of the People's Republic of China, combustible gas laser

  • CNS 5242-1980 Interferometer Type Instrumental Gas Detector for Inflammable Gas
  • CNS 5902-1980 Hot Wire Type Gas Alarms
  • CNS 5901-1980 Interferometer Type Gas Alarms
  • CNS 14665-2002 Method of test for determination of sulfur compounds in natural gas and gaseous fluels by gas chromatograph and Chemiluminescence

KR-KS, combustible gas laser

GOSTR, combustible gas laser

  • GOST 34704-2020 Natural combustible gas. Determination of methane number
  • GOST R 52087-2018 Fuel liquefied hydrocarbon gases. Specifications
  • GOST 23781-1987 Natural combustible gases. Chromatographic method for determination of component composition

Danish Standards Foundation, combustible gas laser

  • DS/EN 28 846:1993 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases
  • DS/EN 14756:2007 Determination of the limiting oxygen concentration (LOC) for flammable gases and vapours
  • DS/EN 50270:2007 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • DS/ISO 6184-2:1993 Explosion protection systems - Part 2: Determination of explosion indices of combustible gases in air
  • DS/EN 60079-29-1:2008 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
  • DS/EN 26184-2:1993 Explosion protection systems. Part 2: Determination of explosion indices of combustible gases in air
  • DS/EN 50402/A1:2008 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of fixed gas detection systems
  • DS/EN 50402:2006 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of fixed gas detection systems
  • DS/EN 50244:2000 Electrical apparatus for the detection of combustible gases in domestic premises - Guide on the selection, installation, use and maintenance
  • DS/EN 60079-29-2/Corr. 1:2008 Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
  • DS/EN 60079-29-2:2008 Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
  • DS/EN 50054:1994 Electrical apparatus for the detection measurement of combustible gases - General requirements and test methods
  • DS/EN 50058:1994 Electrical apparatus for the detection and measurement of combustible gases - Performance requirements for Group II apparatus indication up to 100% (v/v) gas

AT-ON, combustible gas laser

  • ONORM EN 28846-1993 Small craft. Electrical devices. Protection against ignition of surrounding flammable gases (ISO 8846:1990)

BE-NBN, combustible gas laser

  • NBN-EN 28846-1994 Small craft. Electrical devices. Protection against ignition of surrounding flammable gases (ISO 8846:1990)
  • NBN-EN 50058-1993 Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100 % (v/v) gas
  • NBN-EN 50054-1993 Electrical apparatus for the detection and measurement of combustible gases. General requirements and test methods

NL-NEN, combustible gas laser

  • NEN-ISO 8846:1993 Small craft. Electrical devices. Protection against ignition of surrounding flammable gases (ISO 8846:1990)

API - American Petroleum Institute, combustible gas laser

  • API REPORT 17-1980 Review of Gas Analysis Techniques for Application to Combustible Gas Detectors

Heilongjiang Provincial Standard of the People's Republic of China, combustible gas laser

  • DB23/T 1802-2016 Technical specification for detection of combustible gas and toxic gas alarm system

CENELEC - European Committee for Electrotechnical Standardization, combustible gas laser

  • EN 50241-2:1999 Specification for Open Path Apparatus for the Detection of Combustible or Toxic Gases and Vapours - Part 2: Performance Requirements for Apparatus for the Detection of Combustible Gases
  • EN 50270:1999 Electromagnetic Compatibility - Electrical Apparatus for the Detection and Measurement of Combustible Gases@ Toxic Gases or Oxygen
  • EN 50073:1999 Guide for Selection@ Installation@ Use and Maintenance of Apparatus for the Detection and Measurement of Combustible Gases or Oxygen

Professional Standard - Petroleum, combustible gas laser

  • SY 6503-2000 Regulation for using combustible gas detection and alarm instruments
  • SY 6503-2016 Safety specification of combustible gas detection and alarm system for petroleum and natural gas engineering
  • SY 6503-2008 Safety technical specification of combustible gas detection and alarm system for petroleum and natural gas engineering

US-FCR, combustible gas laser

Anhui Provincial Standard of the People's Republic of China, combustible gas laser

  • DB34/T 392-2004 Test method for laser determination of inhalable particulate matter in indoor air

YU-JUS, combustible gas laser

  • JUS Z.C8.030-1986 Determination of fjammability of plastics. Determination ofthe temperature of evolution of flammable gases (decompositin temperature)

Institute of Electrical and Electronics Engineers (IEEE), combustible gas laser

  • NFPA (Fire) 329 Recommended Practice for Handling Releases of Flammable and Combustible Liquids and Gases, 2020 Edition
  • NFPA (Fire) 91 Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Noncombustible Particulate Solids, 2020 Edition

AENOR, combustible gas laser

  • UNE-EN 14756:2007 Determination of the limiting oxygen concentration (LOC) for flammable gases and vapours
  • UNE-EN 60079-29-1:2017 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
  • UNE-EN 60079-29-1:2010 Explosive atmospheres -- Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
  • UNE-EN 50402:2006 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of fixed gas detection systems
  • UNE-EN 50402:2006/A1:2008 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of fixed gas detection systems
  • UNE-EN 26184-2:1993 EXPLOSION PROTECTION SYSTEMS. PART 2: DETERMINATION OF EXPLOSION INDICES OF COMBUSTIBLE GASES IN AIR. (ISO 6184-2:1985).
  • UNE-EN 60079-29-2:2011 Explosive atmospheres -- Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen

Lithuanian Standards Office , combustible gas laser

  • LST EN 14756-2007 Determination of the limiting oxygen concentration (LOC) for flammable gases and vapours
  • LST EN 50270-2007 Electromagnetic compatibility - Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen
  • LST EN 50402-2005/A1-2008 Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen - Requirements on the functional safety of fixed gas detection systems

American National Standards Institute (ANSI), combustible gas laser

  • ANSI/NFPA 329-2010 Recommended Practice for Handling Releases of Flammable and Combustible Liquids and Gases
  • ANSI Z83.4b-2005 Non-Recirculating Direct Gas Fired Industrial Air Heaters
  • ANSI/ISA 12.27.01-2011 Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids

ZA-SANS, combustible gas laser

  • SANS 8846:2008 Small craft - Electrical devices - Protection against ignition of surrounding flammable gases
  • SANS 60079-20:1996 Electrical apparatus for explosive gas atmospheres Part 20: Data for flammable gases and vapours relating to the use of electrical apparatus

Professional Standard - Agriculture, combustible gas laser

Standard Association of Australia (SAA), combustible gas laser

  • AS/NZS 61779.6:2000 Electrical apparatus for the detection and measurement of flammable gases Part 6: Guide for the selection,installation,use and maintenance of apparatus for the detection and measurement of flammable gases
  • AS 2896:2011
  • AS 2896:2021 Medical gas systems — Installation and testing of non-flammable medical gas pipeline systems
  • AS/NZS 60079.29.4:2011
  • AS/NZS 60079.29.1:2017 Explosive atmospheres, Part 29.1: Gas detectors — Performance requirements of detectors for flammable gases
  • AS/NZS 60079.20:2000 Electrical apparatus for explosive gas atmospheres - Data for flammable gases and vapours, relating to the use of electrical apparatus
  • AS/NZS 60079.29.2:2016 Explosive atmospheres, Part 29.2: Gas detectors — Selection, installation, use and maintenance of detectors for flammable gases and oxygen

National Metrological Technical Specifications of the People's Republic of China, combustible gas laser

  • JJF 1368-2012 Program of Pattern Evaluation of Combustible.Gas Alarm Detectors

Shanghai Provincial Standard of the People's Republic of China, combustible gas laser

  • DB31/ 89-1997 Safety technical requirements for combustible gas leakage alarm

American Society for Testing and Materials (ASTM), combustible gas laser

  • ASTM D7904-15 Standard Test Method for Determination of Water Vapor (Moisture Concentration) in Natural Gas by Tunable Diode Laser Spectroscopy (TDLAS)
  • ASTM D7904-21 Standard Test Method for Determination of Water Vapor (Moisture Concentration) in Natural Gas by Tunable Diode Laser Spectroscopy (TDLAS)
  • ASTM D3284-05 Standard Practice for Combustible Gases in the Gas Space of Electrical Apparatus Using Portable Meters
  • ASTM D3284-05(2011) Standard Practice for Combustible Gases in the Gas Space of Electrical Apparatus Using Portable Meters
  • ASTM D3284-05(2019) Standard Practice for Combustible Gases in the Gas Space of Electrical Apparatus Using Portable Meters
  • ASTM E681-09(2023) Standard Test Method for Concentration Limits of Flammability of Chemicals (Vapors and Gases)
  • ASTM D3284-99 Standard Test Method for Combustible Gases in the Gas Space of Electrical Apparatus Using Portable Meters
  • ASTM D8488-22 Standard Test Method for Determination of Hydrogen Sulfide (H2S) in Natural Gas by Tunable Diode Laser Spectroscopy (TDLAS)

Professional Standard - Petrochemical Industry, combustible gas laser

  • SH 3063-1999 Specification for the design of combustble gas and toxic gas detection and alarm for petrochemical industry
  • SH 3009-2001 Specification for design of fuel gas system and combustible gas emission system in petrochemical enterprises
  • SH 3009-2013 Design specification for combustible gas discharge system in petrochemical industry

BR-ABNT, combustible gas laser

  • ABNT NBR 17505-6-2013 Storage of flammable and combustible liquids Part 6: Electrical requirement for installations and electrical equipment

国家能源局, combustible gas laser

  • SY/T 6503-2022 Safety Specifications for Combustible Gas and Toxic Gas Detection and Alarm Systems in Petroleum and Natural Gas Engineering
  • SY/T 6503-2016 Safety Specifications for Combustible Gas Detection and Alarm Systems in Petroleum and Natural Gas Engineering

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会, combustible gas laser

  • GB/T 34710.3-2018 Classification of the mixture gas—Part 3:Flammable classification
  • GB/T 20936.1-2017 Gas detectors for explosive atmospheres—Part 1: Performance requirements of detectors for flammable gases
  • GB/T 20936.4-2017 Gas detectors for explosive atmospheres—Part 4:Performance requirements of open path detectors for flammable gases
  • GB/T 20936.2-2017 Gas detectors for explosive atmospheres—Part 2:Selection,installation,use and maintenance of detectors for flammable gases and oxygen

National Fire Protection Association (NFPA), combustible gas laser

  • NFPA 329-2005 Recommended Practice for Handling Releases of Flammable and Combustible Liquids and Gases Effective Date: 2/7/2005
  • NFPA 329-2015 Recommended Practice for Handling Releases of Flammable and Combustible Liquids and Gases (Effective Date: 12/1/2014)
  • NFPA 91-2004 Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Noncombustible Particulate Solids Effective Date: 8/5/2004

Jiangxi Provincial Standard of the People's Republic of China, combustible gas laser

  • DB36/T 759-2019 Technical specifications for safety inspection of combustible gas and toxic gas alarm system in industrial enterprises
  • DB36/ 759-2013 Technical specifications for safety inspection of combustible gas and toxic gas alarm system in industrial enterprises

CU-NC, combustible gas laser

  • NC 96-02-17-1987 Standards System for Fire Protection. Stores for Combustible Gases. General Requirements

NZ-SNZ, combustible gas laser

  • AS/NZS 60079.29.1:2008 Explosive atmospheres Part 29.1: Gas detectors-Performance requirements of detectors for flammable gases
  • NZS 6101.1:1988 CLASSIFICATION OF HAZARDOUS AREAS Part 1 FLAMMABLE GAS AND VAPOUR ATMOSPHERES
  • AS/NZS 60079.29.2:2008 Explosive atmospheres Part 29.2: Gas detectors-Selection, installation, use and maintenance of detectors for flammable gases and oxygen

Professional Standard - Public Safety Standards, combustible gas laser

  • GA 127-1996 Technical requirements and test methods for household comdustible gas alarm unit

SE-SIS, combustible gas laser

  • SIS SS-EN 26 184-2-1991 Explosion protection systems — Part 2: Determination of explosion indices of combustible gases in air
  • SIS SS-EN 50 054-1992 Electrical apparatus for the detection and measurement of combustible gases — General requirements and test methods
  • SIS SS-ISO 6184-2:1991 Explosion protection systems — Part 2: Determination of explosion indices of combustible gases in air
  • SIS SS-EN 50 058-1992 Electrical apparatus for the detection and measurement of combustible gases - Performance requirements for Group II apparatus indicating up to 100 % (v/v) gas

Defense Logistics Agency, combustible gas laser

Canadian Standards Association (CSA), combustible gas laser

  • CAN/CSA-C22.2 NO.60079-29-1-2012 Explosive atmospheres — Part 29-1: Gas detectors — Performance requirements of detectors for flammable gases (First Edition)

Professional Standard - Energy, combustible gas laser

  • NB/T 25110-2020 Technical guidelines for commissioning of combustible gas monitoring and control systems in nuclear power plants
  • NB/T 20031-2021 Control of Combustible Gas Concentration in Containment after Accident of PWR Nuclear Power Plant

RO-ASRO, combustible gas laser

  • STAS 11774-1980 Plants and installations for heat treatment COMBUSTIB1LE GAS VERTICAL FURNACES Main parameters

Manufacturers Standardization Society of the Valve and Fitting Industry (MSS), combustible gas laser

  • MSS SP-115-2010 Excess Flow Valves, 1 1/4 NPS and Smaller, for Fuel Gas Service

EEMUA - Engineering Equipment and Materials Users Association, combustible gas laser

  • PUB NO 155-1988 Standard Test Method for Comparative Performance of Flammable Gas Detectors Against Poisoning

农业农村部, combustible gas laser

  • NY/T 1860.25-2016 Test Guidelines for Determination of Physical and Chemical Properties of Pesticides Part 25: Gas Flammability

ES-AENOR, combustible gas laser





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