Wood-based panels - Determination of moisture content

ISO 16979:2003 specifies a method for determining the moisture content of wood-based panels.

Panneaux à base de bois — Détermination de l'humidité

L'ISO 16979:2002 prescrit une méthode de détermination de l'humidité des panneaux à base de bois.

General Information

Status
Published
Publication Date
07-May-2003
Technical Committee
ISO/TC 89 - Wood-based panels
Current Stage
9093 - International Standard confirmed
Start Date
24-Jun-2025
Completion Date
13-Dec-2025

Relations

Effective Date
06-Jun-2022
Effective Date
15-Apr-2008

Overview

ISO 16979:2003 is an international standard established by the International Organization for Standardization (ISO) that specifies a method for determining the moisture content in wood-based panels. This standard provides guidelines on sampling, preparation, drying, and weighing procedures to accurately measure moisture levels. Moisture content significantly affects the physical properties and performance of wood-based panels, making this standard essential for quality control, product specification, and manufacturing processes within the wood panel industry.

Key Topics

  • Scope and Purpose
    Specifies a standardized gravimetric method for quantifying moisture content in wood-based panels by measuring the mass loss after drying.

  • Sampling and Sample Preparation
    Sampling and specimen cutting must conform to ISO 16999 to ensure representative samples. Specimens should be free from loose particles and have a minimum initial mass of 20 grams.

  • Measurement Principle
    Moisture content is determined by weighing samples before and after drying in a controlled environment at 103 ± 2 °C until constant weight is reached.

  • Equipment Requirements

    • Precision balance with at least 0.01 g graduation
    • Drying oven with air circulation capable of maintaining 103 ± 2 °C
    • Desiccator with silica gel to prevent moisture gain after drying
  • Test Procedure
    Weigh specimens immediately post-sampling, dry until mass stabilization, then weigh again after cooling in the desiccator.

  • Moisture Content Calculation
    Moisture content (H) is calculated as the percentage of mass lost relative to the dry mass using the formula:

    H = ((m1 - m0) / m0) × 100
    where m1 = initial mass and m0 = dry mass (g)

  • Reporting
    The test report must include laboratory details, sampling reference (ISO 16999), panel type, thickness, equipment used, moisture content results, and any deviations from the standard.

Applications

  • Quality Control in Manufacturing
    Ensuring moisture content adheres to specifications prevents defects such as warping, swelling, and reduced structural integrity in wood-based panels used in furniture, construction, and cabinetry.

  • Material Specification and Certification
    Standardized moisture determination supports compliance with product standards, enhancing reliability for suppliers and end-users.

  • Research and Development
    Accurate moisture measurement is critical in testing new wood panel materials and treatments, influencing performance and durability assessments.

  • Logistics and Storage Management
    Monitoring moisture levels helps in optimizing storage conditions, reducing risk of biological deterioration or dimensional changes during transport and handling.

Related Standards

  • ISO 16999: Wood-based panels - Sampling and cutting of test pieces
    Outlines procedures for obtaining representative specimens suitable for moisture content testing as per ISO 16979.

  • EN 322: Wood-based panels - Determination of moisture content
    The European standard upon which ISO 16979 is based, harmonizing testing methods across regions.

  • ISO 9425: Wood-based panels - Determination of moisture content (replaced by ISO 16979)
    Earlier version replaced by the current standard with extended requirements for sampling and testing.


Keywords: ISO 16979, moisture content, wood-based panels, moisture determination, wood panel standard, ISO standards, wood moisture testing, panel quality control, drying oven method, wood panel sampling.

Standard

ISO 16979:2003 - Wood-based panels -- Determination of moisture content

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Standard

ISO 16979:2003 - Panneaux a base de bois -- Détermination de l'humidité

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Frequently Asked Questions

ISO 16979:2003 is a standard published by the International Organization for Standardization (ISO). Its full title is "Wood-based panels - Determination of moisture content". This standard covers: ISO 16979:2003 specifies a method for determining the moisture content of wood-based panels.

ISO 16979:2003 specifies a method for determining the moisture content of wood-based panels.

ISO 16979:2003 is classified under the following ICS (International Classification for Standards) categories: 79.060.01 - Wood-based panels in general. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 16979:2003 has the following relationships with other standards: It is inter standard links to ISO 12781-2:2011, ISO 9425:1989. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 16979:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 16979
First edition
2003-05-01
Wood-based panels — Determination of
moisture content
Panneaux à base de bois — Détermination de l'humidité

Reference number
©
ISO 2003
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©  ISO 2003
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ii © ISO 2003 — All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16979 was prepared by Technical Committee ISO/TC 89, Wood-based panels.
Introduction
This International Standard is based on European Standard EN 322. It cancels and replaces ISO 9425:1989
which has been extended to include provisions for sampling and cutting of test pieces.

iv © ISO 2003 — All rights reserved

INTERNATIONAL STANDARD ISO 16979:2003(E)

Wood-based panels — Determination of moisture content
1 Scope
This International Standard specifies a method for determining the moisture content of wood-based panel
...


NORME ISO
INTERNATIONALE 16979
Première édition
2003-05-01
Panneaux à base de bois —
Détermination de l'humidité
Wood-based panels — Determination of moisture content

Numéro de référence
©
ISO 2003
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©  ISO 2003
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publication ne peut être reproduite ni utilisée sous
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Publié en Suisse
ii © ISO 2003 — Tous droits réservés

Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée
aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du
comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,
Partie 2.
La tâche principale des comités techniques est d'élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur
publication comme Normes internationales requiert l'approbation de 75 % au moins des comités membres
votants.
L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable de ne
pas avoir identifié de tels droits de propriété et averti de leur existence.
L'ISO 16979 a été élaborée par le comité technique ISO/TC 89, Panneaux à base de bois.
Introduction
La présente Norme internationale est basée sur la Norme européenne EN 322. Elle annule et remplace
ISO 9425:1989 qui a été étendue à des dispositions pour l’échantillonnage et le découpage des éprouvettes.

iv © ISO 2003 — Tous droits réservés

NORME INTERNATIONALE ISO 16979:2003(F)

Panneaux à base de bois — Détermination de l'hum
...

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