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ISO 157:2025

Coal — Determination of forms of sulfur

Publication date:   May 15, 2025

General information

60.60   Standard published   May 15, 2025

ISO

ISO/TC 27/SC 5 Methods of analysis

International Standard

73.040   Coals

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Scope

This document specifies methods of determining the sulfate and pyritic sulfur mass fraction of coals, and of calculating the amount of organic sulfur present.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 157:1996

WITHDRAWN
ISO 157:1996/Cor 1:1999

NOW

PUBLISHED
ISO 157:2025
60.60 Standard published
May 15, 2025