The international standards for coal testing are mainly formulated by the International Organization for Standardization (ISO), while some countries and regions (such as the United States, Europe, etc.) also have their own standard systems. The following is the classification of widely adopted international coal testing standards and some core standards:
I. ISO International Standards (International Organization for Standardization)
The ISO standard is the world's most authoritative standard for coal testing, covering key links such as coal sampling, sample preparation, industrial analysis, elemental analysis, and calorific value determination.
1. Sampling and sample preparation
ISO 18283:2006
"Hard Coal and Coke - Manual Sampling
Standardize the basic principles and methods of manual coal sampling.
ISO 13909:2016
"Hard Coal and Coke - Mechanical Sampling"
It is applicable to the design, operation and deviation testing of coal mechanical sampling systems.
ISO 2309:2020
"Lignite - Sampling Principles"
2. proximate analysis
ISO 11722:2023
"Solid Mineral Fuels - Hard Coal - Moisture Determination"
ISO 1171:2023
"Solid Mineral Fuels - Ash Content Determination"
ISO 562:2023
"Hard Coal and Coke - Determination of Volatile Matter
3. ultimate analysis
ISO 17247:2020
"Coal - Elemental Analysis (Calculation of Carbon, Hydrogen, Nitrogen, Oxygen and Sulfur)
ISO 19579:2019
"Solid Mineral Fuels - Determination of Sulfur Content"
ISO 625:2023
"Coal and Coke - Determination of Carbon and Hydrogen (Libixi Method)"
4. Calorific value determination
ISO 1928:2020
"Solid Mineral Fuels - Determination of Cartridge Calorific Value and Calculation of Higher Calorific Value"
5. Physical and technological properties
ISO 589:2008
"Hard Coal - Total Moisture Determination"
ISO 5074:2020
"Determination of Hardgrove Grindability Index of Hard Coal"
ISO 12900:2018
"Determination of Wear Index of Coal"
ISO 157:2023
"Coal - Determination of Slagging Property"
Ii. ASTM Standards (American Society for Testing and Materials)
ASTM standards are widely used in North America and international trade, and some of them are equivalent to or convertible to ISO standards.
ASTM D121: Standard Terminology for Coal
ASTM D2234/D2234M: Standard for Coal Sampling
ASTM D3172: Analytical Standard for the Coal Industry
ASTM D3176: Standard for Elemental analysis of coal
ASTM D5865: Standard for determination of Calorific value of coal
ASTM D409/D409M: Determination of Grindability index of coal
Iii. Standards for Other Regions
European Standard (EN)
European standards are often in harmony with ISO standards, for example:
EN 506:2021 (Determination of Moisture content in Lignite)
EN 517:2021 (Determination of ash content in Hard coal)
2. Chinese National Standard (GB
Many Chinese standards are equivalent to or modified from ISO standards, for example:
GB/T 211 (Determination of Total Moisture in Coal)
GB/T 212 (Industrial analysis methods for coal)
GB/T 213 (Method for Determination of Calorific Value of Coal)
GB/T 214 (Method for Determination of Total Sulfur in Coal)
3. Indian Standard (IS)
IS 1350 (Series Standards for Coal Analysis)

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