For nitrogen isotopes

For nitrogen isotopes, Total:50 items.

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

The Chinese standard classification for "For nitrogen isotopes" includes: Soil and fertilizer in general , Basic standard and general method , Industrial gas and chemical gas , Other chemical products in general .

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

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

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

海关总署

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

Inner Mongolia Provincial Standard of the People's Republic of China

DB15/T 975-2016 Detection method of carbon and nitrogen isotope abundance ratio in beef and mutton of livestock products

Professional Standard - Geology

DZ/T 0184.4-1997 Determination of rubidium-strontium isotope geological age and strontium isotope ratio in rock and mineral
DZ/T 0184.8-1997 Determination of 40Ar -39 Ar isotope geological age and argon isotope ratio
DZ/T 0184.6-1997 Determination of samarium-neodymium isotope geological age and neodymium isotope ratio
DZ/T 0184.22-1997 Determination of silicon isotopic composition

国家文物局

WW/T 0045-2012 Carbon and nitrogen isotope vegetarian analysis of bone sample collection and laboratory operation specifications

Professional Standard - Chemical Industry

HG/T 3789-2005 Stable isotope gaseous neon
HG/T 5941～5942-2021 Caprylic acid labeled with stable isotope 13C and amino acid labeled with stable isotope 15N (2021)
HG/T 4138-2010 Stable isotope 13C labelled Urea

RU-GOST R

GOST 23644-1979 Gaseous nitrogen concentrated by stable isotope Nitrogen-15. Specifications

KR-KS

KS K ISO 20921-2023 Textiles — Determination of stable nitrogen isotope ratio in cotton fibres

SCC

DANSK DS/ISO 20921:2019 Textiles – Determination of stable nitrogen isotope ratio in cotton fibres
UNE-CEN/TS 15604:2008 EX Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DANSK DS/EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DANSK DS/ISO 15604:2020 Fertilizers – Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
SN-CEN/TS 15604:2007 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
NS-EN 15604:2009 Fertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS DD CEN/TS 15750:2006 Fertilizers. Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
08/30179332 DC BS EN 15604. Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
DIN EN ISO 15604 E:2019 Draft Document - Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen (ISO 15604:2016); German and English version prEN ISO 15604:2019
SN-CEN/TS 15750:2008 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
NS-EN 15750:2009 Fertilizers — Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS DD CEN/TS 15750:2008 Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DANSK DS/EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
AENOR UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
AS CS 16:1941 General conditions of contract (for buildings)

British Standards Institution (BSI)

BS ISO 20921:2019 Textiles. Determination of stable nitrogen isotope ratio in cotton fibres
14/30313910 DC BS ISO 15604. Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
BS DD CEN/TS 15750:2009 Fertilizers - Determination of different forms of nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods

AENOR

UNE-EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
UNE-EN 15750:2010 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods

GOSTR

GOST R ISO 15604-2019 Fertilizers. Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen

Lithuanian Standards Office

LST EN 15604-2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen

European Committee for Standardization (CEN)

EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
EN 15750:2009 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
DD ENV 12 140-1996 Fruit and Vegetable Juices - Determination of the Stable Carbon Isotope Ratio (13C/12C) of Sugars from Fruits Juices - Method Using Isotope Ratio Mass Spectrometry

Danish Standards Foundation

DS/EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen

American Society for Testing and Materials (ASTM)

ASTM D7219-05 Standard Specification for Isotropic and Near-isotropic Nuclear Graphites
ASTM D7219-08 Standard Specification for Isotropic and Near-isotropic Nuclear Graphites

German Institute for Standardization

DIN EN 15604:2009-06 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; German version EN 15604:2009 / Note: To be replaced by DIN EN ISO 15604 (2019-06).
DIN EN 15604:2009 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen; English version of DIN EN 15604:2009-06
DIN EN 15750:2010-02 Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods; German version EN 15750:2009

CEN - European Committee for Standardization

PD CEN/TS 15604:2007 Fertilizers - Determination of different forms of nitrogen in the same sample@ containing nitrogen as nitric@ ammoniacal@ urea and cyanamide nitrogen

International Organization for Standardization (ISO)

ISO 15604:2016 Fertilizers - Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogen
ISO 15366:1999 Nuclear energy - Chemical separation and purification of uranium and plutonium in nitric acid solutions for isotopic and dilution analysis by solvent chromatography

HU-MSZT

MSZ MI 19380-1977 Iodine isotope detection in water

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