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ISO 19743:2026

Solid biofuels — Determination of content of heavy extraneous materials larger than 3,15 mm

Jan 28, 2026

General information

60.60     Jan 28, 2026

ISO

ISO/TC 238

International Standard

27.190     75.160.40  

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Scope

This document specifies a method for the determination of the content of heavy extraneous materials (HEM) larger than 3,15 mm by the use of sink-and-float separation combined with elutriation. This document is applicable to woody biomass in accordance with ISO 17225-1, and especially for hogfuel in accordance with ISO 17225-9.
NOTE 1        This method is designed to determine the level of impurities larger than 3,15 mm with a specific density >1 g/cm3, such as stones, glass, rubber, metal and certain types of plastics.
NOTE 2        During the processing of the sample, hand sorting of light impurities with a specific density ≤1 g/cm3 (e.g. plastic foil) can also be done.
NOTE 3        Some heavy extraneous materials (e.g. lumps of clay) can fall apart when submerged in water.
NOTE 4        Heavy extraneous materials smaller than 3,15 mm can damage milling equipment, when reducing the material in size to produce laboratory samples.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 19743:2017

NOW

PUBLISHED
ISO 19743:2026
60.60 Standard published
Jan 28, 2026

National adoptions

SRPS EN ISO 19743:2026  
ISS

Solid biofuels - Determination of content of heavy extraneous materials larger than 3,15 mm (ISO 19743:2026)

60.60   Standard published

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