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Database: 365,228(8 Aug 2026)

Nitrogen enrichment

Nitrogen enrichment, Total:49 items.

The international standard classification for "Nitrogen enrichment" includes: Other non-ferrous metals and their alloys , Cadmium, cobalt and their alloys .

The Chinese standard classification for "Nitrogen enrichment" includes: Artificial rich ore , Rare metals and their alloys .


Professional Standard - Non-ferrous Metal

Group Standards of the People's Republic of China

Professional Standard - Rare Earth

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

工业和信息化部

Professional Standard - Ferrous Metallurgy

Yunnan Provincial Standard of the People's Republic of China

  • DB53/T 727-2015 Palladium charcoal enrichment safety production specification

Shaanxi Provincial Standard of the People's Republic of China

  • DB61/T 520-2011 Code for design, construction and acceptance of active nitrogen-enriched cultural relics protection system

海关总署

  • SN/T 5409-2022 Identification method of zinc oxide enrichments for zinc smelting

Natural Gas Processor's Association (NGPA)

Korean Agency for Technology and Standards (KATS)

  • KS D ISO 4498-2-2011 Sintered metal materials, excluding hardmetals-Determination of apparent hardness-Part 2:Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen
  • KS D ISO 4498-2-2001(2006) Sintered metal materials, excluding hardmetals-Determination of apparent hardness-Part 2:Case-hardened ferrous materials, surface enriched by carbon or carbon and nitrogen
  • KS I ISO 16590-2006(2016) Water quality-Determination of mercury-Methods involving enrichment by amalgamation
  • KS I ISO 16590-2021 Water quality-Determination of mercury-Methods involving enrichment by amalgamation

RU-GOST R

  • GOST 23644-1979 Gaseous nitrogen concentrated by stable isotope Nitrogen-15. Specifications
  • GOST 23905-1979 Cleaned kaolin. Method for the determination of dispersion
  • GOST 27868-1988 High purity substances. Method for concentration of microimpurities by extraction
  • GOST 33491-2015 Product fermented-milk, enriched bifidobacteriae bifidum. Specifications

Association Francaise de Normalisation

  • NF EN ISO 12846:2012 Water quality - Mercury dosage - Atomic absorption spectrometry (AAS) method with and without enrichment

SCC

  • 10/30196545 DC BS EN ISO 12846. Water quality. Determination of mercury. Method using atomic absorption spectrometry (AAS) with and without enrichment
  • DANSK DS/EN ISO 12846:2012 Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment
  • NS-EN ISO 12846:2012 Water quality — Determination of mercury — Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846:2012)
  • BS EN 12338:1998 Water quality. Determination of mercury. Enrichment methods by amalgamation
  • NS-EN 12338:1998 Water quality — Determination of mercury — Enrichment methods by amalgamation
  • DIN EN ISO 12846 E:2010 Draft Document - Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO/DIS 12846:2010); German version prEN ISO 12846:2010

GSO

  • BH GSO ISO 12846:2016 Water quality -- Determination of mercury -- Method using atomic absorption spectrometry (AAS) with and without enrichment
  • GSO ISO 12846:2013 Water quality -- Determination of mercury -- Method using atomic absorption spectrometry (AAS) with and without enrichment

GOSTR

  • GOST R 58220-2018 Non-enriched nepheline ores. Specifications
  • GOST 27868-2019 High purity substances. Method for concentration of microimpurities by extraction

German Institute for Standardization

  • DIN EN ISO 12846:2012-08 Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846:2012); German version EN ISO 12846:2012

Danish Standards Foundation

  • DS/EN ISO 12846:2012 Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment

Spanish Association for Standardization (UNE)

  • UNE-EN ISO 12846:2012 Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846:2012)

NL-NEN

  • NEN 5920-1988 Aggregates for concrete - Determination of content of fulvo acid

Lithuanian Standards Office

  • LST EN ISO 12846:2012 Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846:2012)