SIST EN ISO 6599-1:2026

• Abstract:

  This document specifies the conditioning atmospheres and the method for conditioning samples of intact, empty paper sacks before and during testing.

• Status: Published
• Public Enquiry End Date: 19-Nov-2025
• Publication Date: 19-Aug-2026
• ICS: 55.080 - Sacks. Bags
• Technical Committee: EPO - Packaging - sales and grouped
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-Aug-2026
• Due Date: 18-Oct-2026
• Completion Date: 20-Aug-2026
• Ref Project: EN ISO 6599-1:2026 - Packaging - Conditioning for testing - Part 1: Paper sacks (ISO 6599-1:2026)

• Replaces: SIST EN 26599-1:1997 - Packaging - Sacks - Conditioning for testing - Part 1: Paper sacks (ISO 6599-1:1983)
• Effective Date: 01-Sep-2026
• Refers: SIST ISO 187:2023 - Paper, board and pulps - Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples
• Effective Date: 26-Aug-2026

Overview

SIST EN ISO 6599-1:2026 - Packaging: Conditioning for Testing - Part 1: Paper Sacks establishes internationally recognized methods for preparing intact, empty paper sacks prior to and during testing. This standard outlines the specific conditioning atmospheres, temperature, and relative humidity values that must be maintained to ensure consistent and reliable test results. Conditioning ensures that paper sacks are equilibrated with the testing environment, which is essential since the physical properties of paper are highly influenced by moisture content. Adopting ISO 6599-1:2026 is crucial for laboratories, manufacturers, and organizations aiming to certify the performance and quality of paper-based packaging in compliance with global benchmarks.

Key Topics

• Conditioning Atmospheres
  Establishes standard atmospheres (e.g., 23°C/50% RH) as defined in ISO 187 and ISO 554, to which paper sacks must be conditioned.
• Temperature and Humidity Control
  Specifies precise temperature and relative humidity ranges to maintain, ensuring accuracy and repeatability in testing.
• Conditioning Periods
  • For sacks without barrier plies: Minimum of 24 hours in the controlled atmosphere.
  • For sacks with barrier plies: Minimum of 7 days to achieve equilibrium.
• Equipment Requirements
  Recommends the use of automated conditioning rooms equipped with recording devices for temperature and humidity.
• Sample Handling
  Details on suspending sacks to allow even exposure to conditioning air across all surfaces.
• Test Report Specifications
  Ensures clear documentation of the conditions and any deviations, supporting transparency and traceability.
• Terminology
  Uses standardized definitions, referring to ISO 6590-1 for packaging vocabulary and ISO 187 for conditioning test methods.

Applications

Adopting SIST EN ISO 6599-1:2026 delivers practical value across the packaging and paper sack industries:

• Quality Control in Manufacturing
  • Ensures consistent product performance by harmonizing the test conditions for paper sacks globally.
  • Supports manufacturers in meeting regulatory requirements and customer specifications.
• Testing Laboratories
  • Provides a reproducible framework for preparing samples, leading to accurate mechanical and physical testing of paper sacks.
  • Facilitates interlaboratory comparisons and certification processes.
• Research and Development
  • Enables comparison of new paper sack constructions and barrier materials under standardized conditions.
• Procurement and Compliance
  • Helps purchasing organizations verify compliance with international packaging standards when sourcing paper sacks.
• Regulatory Bodies
  • Serves as a reference for national regulations on packaging performance, especially when environmental factors affect test results.

Related Standards

• ISO 187: Standard atmosphere for conditioning and testing of paper, board, and pulps - provides the fundamental principles for conditioning and testing environments.
• ISO 554: Specifications for standard atmospheres used for conditioning and/or testing.
• ISO 6590-1: Packaging vocabulary specific to paper sacks, establishing standardized terms and definitions for the industry.

By aligning with SIST EN ISO 6599-1:2026, organizations support international best practices for packaging testing, ensuring their products meet the demanding standards of today’s global marketplace, where consistency, reliability, and performance matter most.

SLOVENSKI STANDARD
01-september-2026
Nadomešča:
SIST EN 26599-1:1997
Embalaža - Kondicioniranje za preskušanje - 1. del: Papirnate vreče (ISO 6599-
1:2026)
Packaging - Conditioning for testing - Part 1: Paper sacks (ISO 6599-1:2026)
Verpackung - Klimatische Vorbehandlung für die Prüfung - Teil 1: Papiersäcke (ISO
6599-1:2026)
Emballages - Conditionnement pour essais - Partie 1: Sacs en papier (ISO 6599-1:2026)
Ta slovenski standard je istoveten z: EN ISO 6599-1:2026
ICS:
55.080 Vreče. Vrečke Sacks. Bags
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 6599-1
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2026
EUROPÄISCHE NORM
ICS 55.080 Supersedes EN 26599-1:1992
English Version
Packaging - Conditioning for testing - Part 1: Paper sacks
(ISO 6599-1:2026)
Emballages - Conditionnement pour essais - Partie 1: Verpackung - Klimatische Vorbehandlung für die
Sacs en papier (ISO 6599-1:2026) Prüfung - Teil 1: Papiersäcke (ISO 6599-1:2026)
This European Standard was approved by CEN on 26 July 2026.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6599-1:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 6599-1:2026) has been prepared by Technical Committee ISO/TC 122
“Packaging” in collaboration with Technical Committee CEN/TC 261 “Packaging” the secretariat of
which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2027, and conflicting national standards
shall be withdrawn at the latest by February 2027.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 26599-1:1992.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 6599-1:2026 has been approved by CEN as EN ISO 6599-1:2026 without any
modification.
International
Standard
ISO 6599-1
Second edition
Packaging — Conditioning for
2026-07
testing —
Part 1:
Paper sacks
Emballages — Conditionnement pour essais —
Partie 1: Sacs en papier
Reference number
ISO 6599-1:2026(en) © ISO 2026

ISO 6599-1:2026(en)
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 6599-1:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Conditioning atmospheres . 1
4.1 General .1
4.2 Temperature and humidity .2
5 Equipment . 2
5.1 Room and measuring instrumentation .2
5.2 Determination of temperature and relative humidity .2
6 Procedure . 2
6.1 General .2
6.2 Minimum conditioning period for sacks without barrier plies .2
6.3 Minimum conditioning period for sacks with barrier plies .2
7 Test report .
...