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Database: 365,228(8 Aug 2026)

isotopes of n

isotopes of n, Total:29 items.

The international standard classification for "isotopes of n" includes: Other organic chemicals , Other products of the chemical industry , Soil quality and pedology in general , Measurement of volume, mass, density, viscosity .

The Chinese standard classification for "isotopes of n" includes: Organic chemicals in general , Other chemical products in general , Soil and fertilizer in general , Basic standard and general method .


Professional Standard - Chemical Industry

  • HG/T 5941~5942-2021 Caprylic acid labeled with stable isotope 13C and amino acid labeled with stable isotope 15N (2021)
  • HG/T 4106-2009 Stable isotope 15N labelled tripeptide

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

  • GB/T 42490-2023 Soil quality—Determination of total content and isotope ratio of organic carbon and nitrogen of soil and biological samples—Stable isotope ratio mass spectrometry
  • GB/T 37750-2019 Stable isotope applied terminology and product naming rules
  • GB/T 20622-2006 Stable isotope 15N Inorganic labelled compound

Professional Standard - Geology

  • DZ/T 0184.9-2024 Isotope analysis methods for geological samples. Part 9: Determination of argon-argon isotope age and argon isotope ratio of geological samples. Furnace method
  • DZ/T 0184.19-1997 Determination of zinc of hydrogen isotope in water in reduction method
  • DZ/T 0184.8-1997 Determination of 40Ar -39 Ar isotope geological age and argon isotope ratio
  • DZ/T 0184.16-1997 Determination of sulfur isotope in sulfide in sulphur hexafluoride method
  • DZ/T 0184.3-1997 Determination of the geological age of particle acorite uranium lead isotepe
  • DZ/T 0184.22-1997 Determination of silicon isotopic composition
  • DZ/T 0184.4-1997 Determination of rubidium-strontium isotope geological age and strontium isotope ratio in rock and mineral
  • DZ/T 0184.6-1997 Determination of samarium-neodymium isotope geological age and neodymium isotope ratio
  • DZ/T 0184.14-1997 Determination of sulfur isotopic composition in sulfide
  • DZ/T 0184.7-1997 Determination of potassium-argon isotope geological age

Fujian Provincial Standard of the People's Republic of China

  • DB35/T 2006-2021 Chemical conversion method for determination of nitrate nitrogen isotope in water

Professional Standard - Commodity Inspection

  • SN/T 4675.32-2021 Method for the determination of nitrogen stable isotope ratio in wine for export

Group Standards of the People's Republic of China

  • T/NAIA 0208-2023 Determination of Stable Isotope Ratio of Carbon and Nitrogen in Lycium Barbarum by Stable Isotope Analyzer Method

Ente Nazionale Italiano di Unificazione

German Institute for Standardization

  • DIN EN 18054:2024 Food authenticity - Determination of C and/or N isotope ratios in food by Elemental Analyser - Isotope Ratio Mass Spectrometry (EA-IRMS); German and English version prEN 18054:2024
  • DIN EN 18054 E:2024 Draft Document - Food authenticity - Determination of C and/or N isotope ratios in food by Elemental Analyser - Isotope Ratio Mass Spectrometry (EA-IRMS); German and English version prEN 18054:2024
  • DIN EN 18054:2024-03 Food authenticity - Determination of C and/or N isotope ratios in food by Elemental Analyser - Isotope Ratio Mass Spectrometry (EA-IRMS); German and English version prEN 18054:2024 / Note: Date of issue 2024-02-16*CD-ROM
  • DIN EN 18054 E:2024-03 Draft Document - Food authenticity - Determination of C and/or N isotope ratios in food by Elemental Analyser - Isotope Ratio Mass Spectrometry (EA-IRMS); German and English version prEN 18054:2024

British Standards Institution (BSI)

  • 24/30457296 DC BS EN 18054 Food authenticity. Determination of C and/or N isotope ratios in food by Elemental Analyser. Isotope Ratio Mass Spectrometry (EA-IRMS)

American Society for Testing and Materials (ASTM)

  • ASTM D7219-08 Standard Specification for Isotropic and Near-isotropic Nuclear Graphites
  • ASTM D7219-05 Standard Specification for Isotropic and Near-isotropic Nuclear Graphites
  • ASTM C1380-04 Standard Test Method for Determination of Uranium Content and Isotopic Composition by Isotope Dilution Mass Spectrometry

Magyar Szabványügyi Testület

  • MSZ 62-1978 Protection against radioactive isotope rays