ISO 20706-1:2019

Name: ISO 20706-1:2019 — Textiles — Qualitative and quantitative analysis of some bast fibres (flax, hemp, ramie) and their blends — Part 1: Fibre identification using microscopy methods
SKU: ISO 20706-1:2019
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Textiles — Qualitative and quantitative analysis of some bast fibres (flax, hemp, ramie) and their blends — Part 1: Fibre identification using microscopy methods

Название (английский):

ISO 20706-1:2019

Textiles — Qualitative and quantitative analysis of some bast fibres (flax, hemp, ramie) and their blends — Part 1: Fibre identification using microscopy methods

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 27
Дата публикации:: 4 декабря 2019 г.
Издание:: ISO IS 20706 edition 1 version 1
ICS:: 59.060.01

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Описание (английский):

This document specifies methods for the identification of some bast fibres (flax, hemp, ramie) using both light microscopy (LM) and scanning electron microscopy (SEM). This document is also applicable to blends of these bast fibres and products made from them.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 20706-1:2019 is an international standard for the qualitative identification of selected bast fibres - flax, hemp and ramie - and their blends using microscopy methods. It specifies procedures for both light microscopy (LM) and scanning electron microscopy (SEM) to determine fibre species in raw materials, yarns, fabrics and finished products. The standard is part of the ISO 20706 series and is intended to support reliable fibre identification for quality control, labelling and forensic purposes.

Key topics and technical requirements

Scope and purpose: Identification of flax, hemp and ramie, including blends and products made from them.

Microscopy methods: Use of LM (transmitted-light) and SEM. LM magnification of ×250–×500 is specified, with ×400 recommended to resolve features down to 2–3 µm. SEM is used to reveal surface details not visible with LM.

Apparatus: Transmitted-light microscope with Köhler illumination, polarizer/analyser and a 530 nm retardation (“red”) plate; visual microscopic image analyser (camera + software); SEM for surface imaging.

Specimen preparation and sampling: Guidance for laboratory sample selection and preparation of longitudinal and cross-sectional test specimens. Annex H covers sampling of laboratory samples for finished products.

Procedures: Both longitudinal view and cross view analyses are recommended (cross view often preferred for ramie). SEM longitudinal viewing is optional. Polarized light and twisting-direction tests are included as normative methods (Annex E, Annex F).

Reagents and materials: Laboratory-grade water (ISO 3696 Grade 3) and clear glycerine for mounting/processing.

Supporting materials: Extensive photomicrographs and rationale in Annexes A–D to aid analyst interpretation.

Reporting: A test report format and required information are defined (see Clause 9).

Practical applications and users

ISO 20706-1 is used where accurate fibre species identification is required:

Textile testing laboratories and fibre analysts for routine quality control and composition verification.

Manufacturers and spinners to confirm raw material authenticity and blends.

Retailers, certification bodies and regulators to support accurate labelling and compliance.

Anti-counterfeiting and forensic investigations to distinguish economically important bast fibres.

Research and R&D teams developing new blends or processing methods.

Using both LM and SEM together improves accuracy, leveraging LM’s internal morphology views and SEM’s surface detail imaging. The standard emphasizes analyst expertise and provides photomicrographs to support consistent interpretation.

Related standards

ISO 20705:2019 - Quantitative microscopical analysis - General principles

ISO 3696 - Water for analytical laboratory use (specification)

ISO 6938 (terms referenced) - Fibre definitions

Keywords: ISO 20706-1, bast fibres, flax, hemp, ramie, fibre identification, light microscopy, scanning electron microscopy, textile analysis, fibre blends.

ISO 20706-1:2019

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

ISO 20705:2019

Textiles — Quantitative microscopical analysis — General principles of testing

BS EN ISO 20706-1:2019

Textiles. Qualitative and quantitative analysis of some bast fibres (flax, hemp, ramie) and their blends. Fib…

ISO 3696:1987

Water for analytical laboratory use — Specification and test methods

BS EN ISO 6938:2014

Textiles. Natural fibres. Generic names and definitions