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EVS-EN ISO 21646:2022

Solid recovered fuels - Sample preparation (ISO 21646:2022)

General information
Valid from 01.06.2022
Base Documents
ISO 21646:2022; EN ISO 21646:2022
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.06.2022
Main
04.10.2011
Main
05.04.2011
Main
This document specifies methods for sample preparation to ensure representativeness of the samples throughout the preparation procedures to produce general analysis samples. Suitable test portions can be taken from the laboratory or general analysis samples and used for analysis according to the specific requirements defined in the corresponding analytical procedures.
This document specifies the correct sample preparation sequence to be applied to:
a) the composite sample, in order to produce a laboratory sample (taking into account large pieces of solid recovered fuel);
b) each sub-sampling step throughout the testing programme;
c) the laboratory sample, in order to obtain suitable test portions;
d) ensure the representativeness of the test portions that have been taken according to the sample preparation plan, prior to physical analysis, chemical analysis or both (e.g. extractions, digestion, analytical determinations).
The methods specified in this document can be used for sample preparation, for example, when the samples are to be tested for bulk density, biomass content determination, mechanical durability, particle size distribution, moisture content, ash content, ash melting behaviour, calorific value, chemical composition, impurities and self-heating properties. The methods are not intended to be applied to the very large samples required for the testing of bridging properties.
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