ISO 2950:2025
Brown coals and lignites — Classification by types on the basis of total moisture mass fraction and tar yield
Brown coals and lignites — Classification by types on the basis of total moisture mass fraction and tar yield
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 23 октября 2025 г.
- Издание:
- ISO IS 2950 edition 2 version 1
- ICS:
- 73.040
This document establishes a classification of brown coals and lignites by types on the basis of total moisture mass fraction and tar yield.
Abstract
Overview
ISO 2950:2025 - Brown coals and lignites - Classification by types on the basis of total moisture mass fraction and tar yield establishes a standardized system to classify brown coals and lignites by two measured properties: and . The document defines classes and groups, prescribes a two‑digit coding system for types, and references the test methods required to determine the classification indices.
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