DIN EN ISO 18134-3 2015-12 PDF

Full title and description

STB DIN EN ISO 18134-3 2015-12 — Solid biofuels — Determination of moisture content — Oven dry method — Part 3: Moisture in general analysis sample (German adoption of ISO 18134-3:2015). This document specifies the oven-dry procedure for determination of moisture in the general analysis sample of solid biofuels and was published in Germany in December 2015 as a DIN adoption of the ISO text.

Abstract

This standard describes the oven-dry method used to determine moisture content in the general analysis sample of solid biofuels. It is applicable to all solid biofuels and is intended to be used in conjunction with relevant sampling and analysis standards (for example EN 14780 / related CEN/ISO documents). The method recognises that small-particle biofuels are hygroscopic and that moisture determination of the analysis sample is carried out simultaneously with other determinations (e.g., calorific value, carbon, nitrogen).

General information

• Status: Withdrawn / replaced by a later edition (see replacement information below).
• Publication date: December 2015 (DIN publication: 2015-12).
• Publisher: DIN (German adoption of the ISO document). Original text: ISO (prepared by ISO/TC 238 Solid biofuels).
• ICS / categories: 75.160.40 (solid biofuels).
• Edition / version: Edition 1 (ISO 18134-3:2015) — German adoption DIN EN ISO 18134-3:2015-12.
• Number of pages: 11 (German publication — DIN metadata).

Scope

The standard specifies the oven-dry (gravimetric) method for determining moisture content in the general analysis sample of solid biofuels. It applies to all solid biofuels and is intended for use where moisture of the analysis sample is required for reporting and for use alongside other property determinations (e.g., calorific value). The procedure accounts for the hygroscopic nature of fine biomass particles and sets out the principle of drying a representative test portion to constant mass under specified temperature and conditions. Note: the 2015 edition has been superseded by a 2023 revision; users should consult the current edition for the latest procedural details and any changes to test conditions.

Key topics and requirements

• Application: moisture determination of the general analysis sample for all solid biofuels.
• Method principle: oven drying of a representative test portion to constant mass and calculation of moisture on a wet basis.
• Sample handling: procedures to minimise humidity exchange before and during analysis (sample preparation, representative subsampling, container and handling precautions).
• Test conditions: specified oven-drying temperature and time (and criteria for constant mass) are defined in the standard; laboratories must follow the exact conditions given in the text for reproducible results.
• Reporting: moisture content reported on a wet basis (percentage of total mass of test sample as received) and ancillary notes on test conditions and sample state.
• Inter-relation with other tests: moisture of the analysis sample is determined simultaneously with other determinations where required (e.g., calorific value, elemental analysis) to ensure comparability.

Typical use and users

Laboratories performing quality control and specification testing of solid biofuels (wood chips, pellets, agricultural residues, misc. biomass), biomass fuel suppliers, testing and certification bodies, research organisations, and regulatory authorities use this standard to determine moisture for reporting, trade, and performance calculations (e.g., calorific value correction). The standard is typically used wherever a harmonised oven-dry moisture result for a general analysis sample is required.

Related standards

Related and referenced documents include other parts of ISO 18134 (where applicable), EN/ISO standards on moisture determination and sampling of solid biofuels (for example EN 14774 / EN 14780 family and subsequent ISO revisions), and the later ISO 18134-3:2023 which replaces the 2015 edition. Users should consult the full list of normative references in the standard text.

Keywords

solid biofuels, moisture content, oven-dry method, general analysis sample, DIN EN ISO 18134-3, biomass testing, hygroscopic, sample preparation

FAQ

Q: What is this standard?

A: It is the German adoption (DIN EN ISO) of ISO 18134-3:2015, which defines an oven-dry (gravimetric) method to determine moisture content in the general analysis sample of solid biofuels.

Q: What does it cover?

A: The standard covers the principle and procedure for oven drying a representative test portion of solid biofuels to constant mass, sample handling to avoid moisture exchange, calculation and reporting of moisture on a wet basis, and how the moisture determination relates to other analysis measurements.

Q: Who typically uses it?

A: Analytical laboratories, biomass fuel producers and traders, conformity assessment and certification bodies, research institutes, and regulators involved in solid biofuel quality assessment and trade.

Q: Is it current or superseded?

A: The 2015 edition has been withdrawn and superseded by a newer edition: ISO 18134-3:2023 (and the corresponding DIN adoption published subsequently). Users should refer to the 2023 edition for the current, authoritative procedure.

Q: Is it part of a series?

A: Yes — ISO 18134 is a multi-part standard series for determination of moisture content in solid biofuels; Part 3 covers the general analysis sample. There are other related parts and complementary CEN/EN documents addressing different sample types and methods.

Q: What are the key keywords?

A: Solid biofuels, moisture, oven dry, gravimetric, analysis sample, DIN EN ISO 18134-3, biomass testing.