ISO 18134-3:2015 describes the method of determining the moisture in the analysis test sample by drying in an oven. It is intended to be used for general analysis samples in accordance with EN 14780. The method described in this part of ISO 18134-3:2015 is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis).
Since biofuels in small particle size are very hygroscopic, their moisture content will change with humidity in the atmosphere and therefore, the moisture of the test portion is determined simultaneously with determination of for example calorific value, carbon content, and nitrogen content.
NOTE The term moisture content when used with biomass materials can be misleading since untreated biomass frequently contains varying amounts of volatile compounds (extractives) which can evaporate when determining the moisture content by oven drying (see References [1] and [2]).

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This document describes the method of determining the moisture content in the general analysis sample by drying in an oven. The method described in this document is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis).
Since biofuels in small particle size are very hygroscopic, their moisture content will change with humidity in the atmosphere and, therefore, the moisture of the general analysis sample is determined simultaneously with the determination of other properties being measured (e.g. calorific value, volatile matter, metals, etc.).
NOTE       Biomass materials can contain small amounts of volatile organic compounds (VOC) which can evaporate when determining moisture content by oven drying (see References [1] and [2]). The release of such compounds is quite small relative to the overall moisture content as determined by this method and is disregarded in this document.

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This document describes the method of determining the moisture content in the general analysis sample by drying in an oven. The method described in this document is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis). Since biofuels in small particle size are very hygroscopic, their moisture content will change with humidity in the atmosphere and, therefore, the moisture of the general analysis sample is determined simultaneously with the determination of other properties being measured (e.g. calorific value, volatile matter, metals, etc.). NOTE Biomass materials can contain small amounts of volatile organic compounds (VOC) which can evaporate when determining moisture content by oven drying (see References [1] and [2]). The release of such compounds is quite small relative to the overall moisture content as determined by this method and is disregarded in this document.

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ISO 18123:2015 aims to define the requirements and method used to determine the volatile matter content of solid biofuels. It is intended for persons and organisations that manufacture, plan, sell, erect or use machinery, equipment, tools, and entire plants related to solid biofuels, and to all persons and organisations involved in producing, purchasing, selling, and utilizing solid biofuels.
The volatile matter content is determined as the loss in mass, less that due to moisture, when solid biofuel is subject to partial pyrolysis under standardized conditions.

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This document determines the fuel quality classes and specifications of graded densified solid biofuels produced from thermally treated biomass for commercial and industrial use. Thermal treatment includes processes such as torrefaction, steam explosion, hydrothermal carbonization and charring, all of which represent different exposure to heat, oxygen, steam or water. This document covers pellets and briquettes produced from the following raw materials (see ISO 17225-1, Table 1):
—   1. Woody biomass;
—   2. Herbaceous biomass;
—   3. Fruit biomass;
—   4. Aquatic biomass;
—   5. Blends and mixtures.
Subcategories of the above stated raw materials are also included.
This document does not consider products, which are marketed as charcoal or as charcoal products. For these products, ISO 17225-1, Table 14 shall apply.

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This document specifies the requirements and method used to determine the volatile matter of solid biofuels. It is intended for persons and organisations that manufacture, plan, sell, erect or use machinery, equipment, tools and entire plants related to solid biofuels, and for all persons and organisations involved in producing, purchasing, selling and utilizing solid biofuels.

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This document determines the fuel quality classes and specifications of graded densified solid biofuels produced from thermally treated biomass for commercial applications and industrial use. This document covers pellets and briquettes produced from the following raw materials (see ISO 17225‑1:2021, Table 1):
—    woody biomass;
—    herbaceous biomass;
—    fruit biomass;
—    aquatic biomass;
—    blends and mixtures.
Subcategories of these raw materials are included.
This document does not consider products which are marketed as charcoal or as charcoal products. For these products, see ISO 17225‑1:2021, Table 14.
NOTE      Health, safety and environmental issues for solid biofuels are important and need special attention; however, they are outside the scope of this document.

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This document specifies the requirements and method used to determine the volatile matter of solid biofuels. It is intended for persons and organisations that manufacture, plan, sell, erect or use machinery, equipment, tools and entire plants related to solid biofuels, and for all persons and organisations involved in producing, purchasing, selling and utilizing solid biofuels.

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This document determines the fuel quality classes and specifications of graded densified solid biofuels produced from thermally treated biomass for commercial applications and industrial use. This document covers pellets and briquettes produced from the following raw materials (see ISO 17225‑1:2021, Table 1): — woody biomass; — herbaceous biomass; — fruit biomass; — aquatic biomass; — blends and mixtures. Subcategories of these raw materials are included. This document does not consider products which are marketed as charcoal or as charcoal products. For these products, see ISO 17225‑1:2021, Table 14. NOTE Health, safety and environmental issues for solid biofuels are important and need special attention; however, they are outside the scope of this document.

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This International Standard specifies a method for determining the amount of material passing through a sieve with 3,15 mm diameter round holes. It is intended for use in all applications (e.g. laboratories, production sites, field locations) where the measurement of fines is required.

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This document specifies a method for determining the amount of material passing through a sieve with 3,15-mm-diameter round holes. It is intended for use in all applications (e.g. laboratories, production sites, field locations) where the measurement of fines is required.

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This document specifies a method for determining the amount of material passing through a sieve with 3,15-mm-diameter round holes. It is intended for use in all applications (e.g. laboratories, production sites, field locations) where the measurement of fines is required.

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This document specifies an operational method for screening of carbon monoxide off-gassing from solid biofuel pellets. It provides requirements for sampling and establishes procedures for sample handling of solid biofuel pellets prior to the analysis of off-gassing. This document specifies the applicability and use of the method. Guidance on the applicability and use of the data is given.

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This document specifies a method for the determination of ash content of all solid biofuels

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This document specifies a method for the determination of ash content of all solid biofuels.

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This document specifies a method for the determination of ash content of all solid biofuels.

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This document specifies general requirements and test methods for bamboo-based activated carbon.

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This document describes the method of determining the moisture content of a test sample of solid
biofuels by drying in an oven and can be used when high precision of the determination of moisture
content is necessary. The method described in this document is applicable to all solid biofuels. The
moisture content of solid biofuels (as received) is always reported based on the total mass of the test
sample (wet basis).
NOTE Biomass materials can contain small amounts of volatile organic compounds (VOC) which can
evaporate when determining moisture content by oven drying (see References [1] and [2]). The release of
such compounds is quite small relative to the overall moisture content as determined by this method and is
disregarded in this document

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This document describes the method of determining the moisture content of a test sample of solid biofuels by drying in an oven and can be used when high precision of the determination of moisture content is necessary. The method described in this document is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis).
NOTE       Biomass materials can contain small amounts of volatile organic compounds (VOC) which can evaporate when determining moisture content by oven drying (see References [1] and [2]). The release of such compounds is quite small relative to the overall moisture content as determined by this method and is disregarded in this document.

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This document describes the method of determining the moisture content of a test sample of solid biofuels by drying in an oven and can be used when high precision of the determination of moisture content is necessary. The method described in this document is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis). NOTE Biomass materials can contain small amounts of volatile organic compounds (VOC) which can evaporate when determining moisture content by oven drying (see References [1] and [2]). The release of such compounds is quite small relative to the overall moisture content as determined by this method and is disregarded in this document.

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This document establishes a vocabulary for solid biofuels. This document only includes raw and processed material originating from
—    forestry and arboriculture,
—    agriculture and horticulture, and
—    aquaculture.
NOTE 1   Chemically treated material cannot include halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values (see also ISO 17225-1:2021, Annex B) or higher than typical values of the country of origin.
NOTE 2   Raw and processed material includes woody, herbaceous, fruit and aquatic biomass and biodegradable waste originating from above sectors.
Materials originating from different recycling processes of end-of-life-products are outside the scope of this document but relevant terms are included for information. Liquid biofuels (ISO/TC 28/SC 7), natural gas (ISO/TC 193) and solid recovered fuels (ISO/TC 300) are outside the scope of this document.

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This international standard specifies analytical methods for the determination of off-gassing from and oxygen depletion by solid biofuel pellets. The standard specifies the applicability and use of analytical methods. It further establishes special procedures for sampling and sample handling of solid biofuels pellets prior to the analysis of off-gassing and oxygen depletion. Guidance on the applicability and use of the data on off-gassing and oxygen depletion from the analytical methods is given.

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This document provides information on basket heating tests for characterisation of self-heating properties of solid biofuel pellet.
This document includes:
— A compilation of basket heating test methods.
— Guidance on the applicability and use of basket heating tests for solid biofuel pellets.
— Information on the application of basket heating test data for calculations of critical conditions in storages.
Data on spontaneous heat generation determined using this document is only associated with the specific quality and age of the sample material.
This document is applicable to solid biofuel pellets only.
NOTE    The information derived using this document is for use in quality control and in hazard and risk assessments related to the procedures given in ISO/DIS 20024:2019.

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This document specifies basket heating tests for the characterization of self-heating properties of solid biofuel pellets.
This document includes:
a)   a compilation of basket heating test methods;
b)   guidance on the applicability and use of basket heating tests for solid biofuel pellets;
c)   information on the application of basket heating test data for calculations of critical conditions in storages.
Data on spontaneous heat generation determined using this document is only associated with the specific quality and age of the sample material.
The information derived using this document is for use in quality control and in hazard and risk assessments related to the procedures given in ISO 20024.
The described methods can be used for other substances than solid biofuel pellets (e.g. wood chips).

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This document defines a method for determination of off-gassing (permanent gases) and oxygen depletion from woody as well as non-woody biomass, including densified materials such as pellets and briquettes, as well as non-densified materials such as chips. The method is also applicable for thermally treated materials, including torrefied and carbonized materials.
The emission and depletion factor and emission and depletion rate for various gas species emitted from sample within a closed test container is determined by means of gas chromatography.
The emission and depletion factor and emission and depletion rate provide guidance for ventilation requirements to keep gas concentrations below Permissible Exposure Levels (PEL) in spaces where workers can be exposed to the enclosed atmosphere.

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This document determines the fuel quality classes and specifications of graded firewood. This document covers only firewood produced from the following raw materials (see ISO 17725‑1:2021, Table 1):
—    1.1.1 Whole trees without roots;
—    1.1.3 Stem wood;
—    1.1.4 Logging residues (thick branches, tops etc.);
—    1.2.1 Chemically untreated by-products and residues from wood processing industry.

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This document determines the fuel quality classes and specifications of graded non-woody pellets. This document covers only non-woody pellets produced from the following raw material (see ISO 17225‑1:2021, Table 1):
—    2 Herbaceous biomass
—    3 Fruit biomass
—    4 Aquatic biomass
—    5 Biomass blends and mixtures
NOTE 1    Herbaceous biomass originates from plants that have a non-woody stem and which die back at the end of the growing season. It includes grains or seeds crops from food production or processing industry and their by-products such as cereals.
NOTE 2    Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups woody biomass, herbaceous biomass, fruit biomass and aquatic biomass.
Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The origin of the blend and mixture is to be described using ISO 17225‑1:2021, Table 1.
If solid biofuel blend or mixture contains chemically treated material it shall be stated.
NOTE 3    Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this document.

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This document determines the fuel quality classes and specifications of graded hog fuel and wood chips for industrial use. It covers only hog fuel and wood chips produced from the following raw materials (see ISO 17225-1, Table 1):
—    1.1 Forest, plantation and other virgin wood;
—    1.2 By-products and residues from wood processing industry;
—    1.3 Used wood;
—    1.4 Blends and mixtures.
This document covers hog fuel that has pieces of varying size and shape, produced by crushing with blunt tools such as rollers, hammers, or flails, and wood chips which are defined as chipped woody biomass with a sub-rectangular shape and a typical length of 5 mm to 50 mm typically in the form of pieces with a defined particle size produced by mechanical treatment with sharp tools such as knives.
See 1.1.2 in ISO 17225-1, Table 1 for by-products and residues from wood processing industry, which can include chemically treated material (e.g. glued, painted, laminated), are not allowed to contain halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values or higher than typical values of the country of origin (see Annex B in ISO 17225-1).
NOTE       If 1.4 Blends and mixtures includes 1.3.2 Chemically treated used wood, it can be only used in the installations permitted to use 1.3.2.

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This document determines the fuel quality classes and specifications of graded non-woody briquettes. This document covers only non-woody briquettes produced from the following raw materials (see ISO 17225‑1:2021, Table 1):
—    2 Herbaceous biomass
—    3 Fruit biomass
—    4 Aquatic biomass
—    5 Biomass blends and mixtures
NOTE 1    Herbaceous biomass originates from plants that have a non-woody stem and which die back at the end of the growing season. It includes grains or seeds crops from food production or processing industry and their by-products such as cereals.
NOTE 2    Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups woody biomass, herbaceous biomass, fruit biomass and aquatic biomass.
Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The origin of the blend and mixture is to be described using ISO 17225‑1:2021, Table 1.
If solid biofuel blend or mixture contains chemically treated material it shall be stated.
NOTE 3              Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this document

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This document defines terms and describes classifications related to biogas production by anaerobic digestion, gasification from biomass and power to gas from biomass sources, biogas conditioning, biogas upgrading and biogas utilization from a safety, environmental, performance and functionality perspective, during the design, manufacturing, installation, construction, testing, commissioning, acceptance, operation, regular inspection and maintenance phases.
Biogas installations are, among others, applied at industrial plants like food and beverage industries, waste water treatment plants, waste plants, landfill sites, small scale plants next to agricultural companies and small scale household installations.
The following topics are excluded from this document:
—   boilers, burners, furnaces and lightening, in case these are not specifically applied for locally produced biogas;
—   gas-fuelled engines for vehicles and ships;
—   the public gas grid;
—   specifications to determine biomethane quality;
—   transportation of compressed or liquefied biogas;
—   transportation of biomass or digestate;
—   assessment and determination whether biomass is sourced sustainably or not.
This document describes the following for information purposes as well:
—   the parameters to determine the size (e.g. small, medium-sized, or large scale);
—   the parameters to determine the type of installation (e.g. domestic, industrial);
—   the parameters to describe the type of technique;
—   terms and processes in order to develop health, safety and environmental protection guidelines for biogas installations.
NOTE   For an explanation of the Scope, see Annex A.

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This document establishes a vocabulary for solid biofuels. This document only includes raw and processed material originating from — forestry and arboriculture, — agriculture and horticulture, and — aquaculture. NOTE 1 Chemically treated material cannot include halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values (see also ISO 17225-1:2021, Annex B) or higher than typical values of the country of origin. NOTE 2 Raw and processed material includes woody, herbaceous, fruit and aquatic biomass and biodegradable waste originating from above sectors. Materials originating from different recycling processes of end-of-life-products are outside the scope of this document but relevant terms are included for information. Liquid biofuels (ISO/TC 28/SC 7), natural gas (ISO/TC 193) and solid recovered fuels (ISO/TC 300) are outside the scope of this document.

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This document determines the fuel quality classes and specifications for solid biofuels of raw and processed materials originating from
a) forestry and arboriculture;
b) agriculture and horticulture;
c) aquaculture.
Chemically treated material may not include halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values (see Annex B) or higher than typical values of the country of origin.
NOTE       Raw and processed material includes woody, herbaceous, fruit, aquatic biomass and biodegradable waste originating from above sectors.

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This document determines the fuel quality classes and specifications of graded wood pellets for non-industrial and industrial use. This document covers only wood pellets produced from the following raw materials (see ISO 17225‑1:2021, Table 1):
—    1.1 Forest, plantation and other virgin wood;
—    1.2 By-products and residues from wood processing industry;
—    1.3.1 Chemically untreated used wood.
Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this document.

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This document specifies a method for the determination of water sorption in a laboratory setting and provides a measure for how the durability is impacted as a result of immersion in water. Post-immersion durability reduction is calculated as the difference between the durability of the as-received sample and the durability of the wetted product.

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This document describes a method for determination of grindability of graded thermally treated and densified biomass fuels such as classified in ISO/TS 17225-8, for the purposes of preparing fuels with a defined particle size distribution for effective combustion in pulverized fuel boilers.
The grindability characteristics determined by the test method provide guidance as to the pulverizing mill performance when utilizing such fuels.
Apart from pelletized materials as described in ISO/TS 17225-8, the method can also be applied to non-compressed or non-densified thermally treated biomass as specified in ISO 17225-1 Table 14 and Table 15.
The results created with this method are not relevant for large wood chips, since limitations apply for large pulverizing coal mills, which are typically not used for grinding materials such as chips.

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This document describes a method for determination of grindability of graded thermally treated and densified biomass fuels such as classified in ISO/TS 17225-8, for the purpose of preparing fuels with a defined particle size distribution for effective combustion in pulverized fuel boilers. The grindability characteristics determined by the test method provide guidance as to the pulverizing mill performance when utilizing such fuels.
Apart from pelletized materials as described in ISO/TS 17225-8, the method can also be applied to non-compressed or non-densified thermally treated biomass as specified in ISO 17225-1:2021, Table 14 and Table 15.
The results created with this method are not relevant for large wood chips, since limitations apply for large pulverizing coal mills, which are typically not used for grinding materials such as chips.

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This document describes a method for determination of grindability of graded thermally treated and densified biomass fuels such as classified in ISO/TS 17225-8, for the purpose of preparing fuels with a defined particle size distribution for effective combustion in pulverized fuel boilers. The grindability characteristics determined by the test method provide guidance as to the pulverizing mill performance when utilizing such fuels. Apart from pelletized materials as described in ISO/TS 17225-8, the method can also be applied to non-compressed or non-densified thermally treated biomass as specified in ISO 17225-1:2021, Table 14 and Table 15. The results created with this method are not relevant for large wood chips, since limitations apply for large pulverizing coal mills, which are typically not used for grinding materials such as chips.

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This document determines the fuel quality classes and specifications of graded wood briquettes. This document covers only wood briquettes produced from the following raw materials (see ISO 17225‑1: 2021, Table 1):
1.1 Forest, plantation and other virgin wood
1.2 By-products and residues from wood processing industry
1.3.1 Chemically untreated used wood
NOTE     Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this document.

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This document determines the fuel quality classes and specifications of graded wood chips. This document covers only wood chips produced from the following raw materials (see ISO 17225-1:2021, Table 1):
1.1 Forest, plantation and other virgin wood;
1.2 By-products and residues from wood processing industry;
1.3.1 Chemically untreated used wood.
This document covers only wood chips, which are produced with sharp tools, and does not cover hog fuel, which is produced with blunt tools.

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This document determines the fuel quality classes and specifications of graded non-woody briquettes. This document covers only non-woody briquettes produced from the following raw materials (see ISO 17225-1:2021, Table 1):
— 2 Herbaceous biomass
— 3 Fruit biomass
— 4 Aquatic biomass
— 5 Biomass blends and mixtures
NOTE 1 Herbaceous biomass originates from plants that have a non-woody stem and which die back at the end of the growing season. It includes grains or seeds crops from food production or processing industry and their by-products such as cereals.
NOTE 2 Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups woody biomass, herbaceous biomass, fruit biomass and aquatic biomass.
Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The origin of the blend and mixture is to be described using ISO 17225-1:2021, Table 1.
If solid biofuel blend or mixture contains chemically treated material it shall be stated.
NOTE 3 Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this document.

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This document determines the fuel quality classes and specifications of graded non-woody pellets.
This document covers only non-woody pellets produced from the following raw material (see
ISO 17225-1:2021, Table 1):
— 2 Herbaceous biomass
— 3 Fruit biomass
— 4 Aquatic biomass
— 5 Biomass blends and mixtures
NOTE 1 Herbaceous biomass originates from plants that have a non-woody stem and which die back at the end
of the growing season. It includes grains or seeds crops from food production or processing industry and their
by-products such as cereals.
NOTE 2 Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups
woody biomass, herbaceous biomass, fruit biomass and aquatic biomass.
Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The
origin of the blend and mixture is to be described using ISO 17225-1:2021, Table 1.
If solid biofuel blend or mixture contains chemically treated material it shall be stated.
NOTE 3 Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this
document.

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This document determines the fuel quality classes and specifications of graded firewood. This document
covers only firewood produced from the following raw materials (see ISO 17725-1:2021, Table 1):
— 1.1.1 Whole trees without roots;
— 1.1.3 Stem wood;
— 1.1.4 Logging residues (thick branches, tops etc.);
— 1.2.1 Chemically untreated by-products and residues from wood processing industry.

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This document determines the fuel quality classes and specifications for solid biofuels of raw and
processed materials originating from
a) forestry and arboriculture;
b) agriculture and horticulture;
c) aquaculture.
Chemically treated material may not include halogenated organic compounds or heavy metals at levels
higher than those in typical virgin material values (see Annex B) or higher than typical values of the
country of origin.
NOTE Raw and processed material includes woody, herbaceous, fruit, aquatic biomass and biodegradable
waste originating from above sectors.

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This document determines the fuel quality classes and specifications of graded wood pellets for nonindustrial
and industrial use. This document covers only wood pellets produced from the following raw
materials (see ISO 17225-1:2021, Table 1):
— 1.1 Forest, plantation and other virgin wood;
— 1.2 By-products and residues from wood processing industry;
— 1.3.1 Chemically untreated used wood.
Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this document.

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This document determines the fuel quality classes and specifications of graded hog fuel and wood chips for industrial use. It covers only hog fuel and wood chips produced from the following raw materials (see ISO 17225-1, Table 1): — 1.1 Forest, plantation and other virgin wood; — 1.2 By-products and residues from wood processing industry; — 1.3 Used wood; — 1.4 Blends and mixtures. This document covers hog fuel that has pieces of varying size and shape, produced by crushing with blunt tools such as rollers, hammers, or flails, and wood chips which are defined as chipped woody biomass with a sub-rectangular shape and a typical length of 5 mm to 50 mm typically in the form of pieces with a defined particle size produced by mechanical treatment with sharp tools such as knives. See 1.1.2 in ISO 17225-1, Table 1 for by-products and residues from wood processing industry, which can include chemically treated material (e.g. glued, painted, laminated), are not allowed to contain halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values or higher than typical values of the country of origin (see Annex B in ISO 17225-1). NOTE If 1.4 Blends and mixtures includes 1.3.2 Chemically treated used wood, it can be only used in the installations permitted to use 1.3.2.

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This document determines the fuel quality classes and specifications of graded non-woody pellets. This document covers only non-woody pellets produced from the following raw material (see ISO 17225‑1:2021, Table 1): — 2 Herbaceous biomass — 3 Fruit biomass — 4 Aquatic biomass — 5 Biomass blends and mixtures NOTE 1 Herbaceous biomass originates from plants that have a non-woody stem and which die back at the end of the growing season. It includes grains or seeds crops from food production or processing industry and their by-products such as cereals. NOTE 2 Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups woody biomass, herbaceous biomass, fruit biomass and aquatic biomass. Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The origin of the blend and mixture is to be described using ISO 17225‑1:2021, Table 1. If solid biofuel blend or mixture contains chemically treated material it shall be stated. NOTE 3 Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this document.

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This document determines the fuel quality classes and specifications of graded firewood. This document covers only firewood produced from the following raw materials (see ISO 17725‑1:2021, Table 1): — 1.1.1 Whole trees without roots; — 1.1.3 Stem wood; — 1.1.4 Logging residues (thick branches, tops etc.); — 1.2.1 Chemically untreated by-products and residues from wood processing industry.

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This document determines the fuel quality classes and specifications of graded non-woody briquettes. This document covers only non-woody briquettes produced from the following raw materials (see ISO 17225‑1:2021, Table 1): — 2 Herbaceous biomass — 3 Fruit biomass — 4 Aquatic biomass — 5 Biomass blends and mixtures NOTE 1 Herbaceous biomass originates from plants that have a non-woody stem and which die back at the end of the growing season. It includes grains or seeds crops from food production or processing industry and their by-products such as cereals. NOTE 2 Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups woody biomass, herbaceous biomass, fruit biomass and aquatic biomass. Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The origin of the blend and mixture is to be described using ISO 17225‑1:2021, Table 1. If solid biofuel blend or mixture contains chemically treated material it shall be stated. NOTE 3 Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this document

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This document describes a method for determination of sorption of graded thermally treated and densified biomass fuels such as classified in ISO/TS 17225-8.
Apart from pelletized materials as described in ISO/TS 17225-8, the method can also be applied to non-compressed or non-densified thermally treated biomass as specified in ISO 17225-1 Table 14 and Table 15.

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This document determines the fuel quality classes and specifications for solid biofuels of raw and processed materials originating from a) forestry and arboriculture; b) agriculture and horticulture; c) aquaculture. Chemically treated material may not include halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values (see Annex B) or higher than typical values of the country of origin. NOTE Raw and processed material includes woody, herbaceous, fruit, aquatic biomass and biodegradable waste originating from above sectors.

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