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ISO/FDIS 2950

Brown coals and lignites — Classification by types on the basis of total moisture mass fraction and tar yield

General information

Current stage: 50.00 Effective date: 5 qer 2025

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: International Standard

ICS: 73.040

Scope

Brown coals are classified in this International Standard according to the following properties: total moisture content calculated on the ash-free basis; tar hiels calculated on the dry, ash-free basis. In tables class numbers, group number and code numbers of brown coal types are given.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 2950:1974

NOW

IN_DEVELOPMENT
ISO/FDIS 2950
50.00 Final text received or FDIS registered for formal approval
5 qer 2025