Rubber, raw natural - Determination of average molecular mass and molecular-mass distribution by size exclusion chromatography (SEC) - Amendment 1

Caoutchouc naturel brut — Détermination de la masse moléculaire moyenne et de la répartition des masses moléculaires par chromatographie d'exclusion stérique (SEC) — Amendement 1

General Information

Status
Published
Publication Date
14-May-2006
ICS
83.040.10 - Latex and raw rubber
Technical Committee
ISO/TC 45/SC 3 - Raw materials (including latex) for use in the rubber industry
Drafting Committee
ISO/TC 45/SC 3/WG 5 - Synthetic and reclaimed rubber
Current Stage
6060 - International Standard published
Start Date
15-May-2006
Due Date
22-Nov-2007
Completion Date
30-Jan-2006

Relations

Amends
ISO 16564:2004 - Rubber, raw natural - Determination of average molecular mass and molecular-mass distribution by size exclusion chromatography (SEC)
Effective Date
06-Jun-2022
Child
ISO 16564:2004 - Rubber, raw natural - Determination of average molecular mass and molecular-mass distribution by size exclusion chromatography (SEC)
Effective Date
15-Apr-2008

Overview

ISO 16564:2004/Amd 1:2006 is an amendment to the international standard for determining the average molecular mass and molecular-mass distribution of raw natural rubber using size exclusion chromatography (SEC). Published by ISO, this amendment updates precision requirements to ensure consistent and reliable testing results across laboratories. The method described supports quality control and analytical testing of raw natural rubber by specifying standardized procedures to measure molecular characteristics vital for rubber performance.

Key Topics

  • Scope of the Amendment: Revises Clause 8 related to the precision of molecular mass measurements.
  • Size Exclusion Chromatography (SEC): The analytical technique used to characterize polymer molecular weight by separating molecules based on size.
  • Precision Validation: An interlaboratory test program was conducted involving four laboratories to establish repeatability and reproducibility of the SEC method for raw natural rubber.
  • Repeatability and Reproducibility:
    • Repeatability reflects variability within the same laboratory under consistent conditions.
    • Reproducibility measures variability across different laboratories.
  • Precision Limits:
    • Defined limits (r and R) indicate acceptable variations in molecular mass measurements; exceeding these may require further investigation.
  • Molecular Mass Data: The amendment provides statistical data including standard deviations and precision limits for the average molecular mass (Mw) of natural rubber.
  • Bias: No reference standards exist to measure bias directly for this method, so bias assessment is not applicable.

Applications

  • Quality Control in Rubber Manufacturing: Ensures raw natural rubber meets specified molecular weight profiles that affect material properties such as elasticity and strength.
  • Research and Development: Enables precise characterization of natural rubber molecular structure critical for developing new rubber compounds.
  • Interlaboratory Comparisons: Establishes benchmark precision data aiding laboratories worldwide to validate their SEC methods against international standards.
  • Material Certification: Provides a validated, consistent technique essential for certification of natural rubber batches according to molecular mass criteria.
  • Regulatory Compliance: Supports manufacturers and testing labs in fulfilling regulatory requirements in rubber testing and analysis.

Related Standards

  • ISO/TR 9272 - Guidelines for determination of precision in test method standards for rubber and rubber products.
  • ISO 16564:2004 - The base international standard for molecular mass determination of raw natural rubber by SEC.
  • Other Polymer Testing Standards - Standards related to polymer molecular weight and distribution analysis by chromatography techniques.

By adopting ISO 16564:2004/Amd 1:2006, industries and laboratories enhance the reliability of molecular mass assessments for raw natural rubber, optimizing product consistency and performance. This amendment reflects the latest precision benchmarks for SEC testing, supporting quality assurance in the rubber sector.

Frequently Asked Questions

ISO 16564:2004/Amd 1:2006 is a standard published by the International Organization for Standardization (ISO). Its full title is "Rubber, raw natural - Determination of average molecular mass and molecular-mass distribution by size exclusion chromatography (SEC) - Amendment 1". This standard covers: Rubber, raw natural - Determination of average molecular mass and molecular-mass distribution by size exclusion chromatography (SEC) - Amendment 1

Rubber, raw natural - Determination of average molecular mass and molecular-mass distribution by size exclusion chromatography (SEC) - Amendment 1

ISO 16564:2004/Amd 1:2006 is classified under the following ICS (International Classification for Standards) categories: 83.040.10 - Latex and raw rubber. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 16564:2004/Amd 1:2006 has the following relationships with other standards: It is inter standard links to ISO 16564:2004; is excused to ISO 16564:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 16564:2004/Amd 1:2006 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 16564
First edition
2004-10-01
AMENDMENT 1
2006-05-15
Rubber, raw natural — Determination of
average molecular mass and molecular-
mass distribution by size exclusion
chromatography (SEC)
AMENDMENT 1
Caoutchouc naturel brut — Détermination de la masse moléculaire
moyenne et de la répartition des masses moléculaires par
chromatographie d'exclusion stérique (SEC)
AMENDEMENT 1
Reference number
ISO 16564:2004/Amd.1:2006(E)
©
ISO 2006
ISO 16564:2004/Amd.1:2006(E)
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ISO 16564:2004/Amd.1:2006(E)
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
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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.
Amendment 1 to ISO 16564:2004 was prepared by Technical Committee ISO/TC 45, Rubber and rubber
products, Subcommittee SC 2, Testing and analysis.
...

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