EN ISO 2588:2014

Leather - Sampling - Number of items for a gross sample (ISO 2588:2014)

ISO 2588:2014 specifies a method for the drawing, from a lot, of whole pieces of leather to form a gross sample.The method is applicable to all kinds of leather of any type of tannage.
ISO 2588:2014 does not cover marking and storage of the gross sample.

Leder - Probenentnahme - Anzahl der Einzelstücke für eine Gesamtprobe (ISO 2588:2014)

Diese internationale Norm legt ein Verfahren für die Ziehung ganzer Stücke Leder aus einem Los fest, um eine Gesamtprobe zu bilden.
Das Verfahren ist anwendbar auf alle Arten von Leder jedweder Gerbung.
ANMERKUNG Diese Internationale Norm behandelt nicht Kennzeichnung und Lagerung der Gesamtprobe.

Cuir - Échantillonnage - Nombre d'unités élémentaires de l'échantillon global (ISO 2588:2014)

L'ISO 2588:2014 spécifie une méthode de prélèvement, sur un lot, de pièces de cuir entières destinées à former un échantillon global. Cette méthode est applicable à tous les types de cuir, quel que soit leur mode de tannage.
L'ISO 2588:2014  ne concerne ni le marquage ni le stockage de l'échantillon global.

Usnje - Vzorčenje - Število vzorčnih kož iz proizvodne šarže (ISO 2588:2014)

Standard EN ISO 2588 določa metodo za izbor celih kosov usnja iz proizvodne šarže.

General Information

• Status: Published
• Publication Date: 15-Jul-2014
• Withdrawal Date: 30-Jan-2015
• ICS: 59.140.30 - Leather and furs
• Technical Committee: CEN/TC 289 - Leather
• Drafting Committee: CEN/TC 289/WG 3 - Fastness test methods
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 16-Jul-2014
• Due Date: 25-Apr-2015
• Completion Date: 16-Jul-2014
• Ref Project: SIST EN ISO 2588:2014 - Leather - Sampling - Number of items for a gross sample (ISO 2588:2014)

Overview - EN ISO 2588:2014 (Leather sampling, gross sample size)

EN ISO 2588:2014 (ISO 2588:2014) specifies a standardized method for drawing whole pieces of leather from a lot to form a gross sample. Published by IULTCS in collaboration with CEN/TC 289, the standard applies to all kinds of leather regardless of tannage. It defines how many whole leather pieces to select depending on lot size and the testing purpose, and it sets out basic requirements for truly random selection and sampling reporting. Note: marking and storage of the gross sample are not covered by this document.

Key topics and requirements

• Scope: sampling of whole leather pieces to form a gross sample applicable to any type of leather.

• Definitions: terms such as lot (batch), gross sample, and item (a whole piece of leather) follow ISO 3534-2 interpretations.

• Minimum sample sizes: the standard gives the minimum number of items in a gross sample depending on lot size and whether testing is non‑destructive or destructive:

  • Lot size 1–10: Non‑destructive = 2, Destructive = 1
  • Lot size 11–50: Non‑destructive = 3, Destructive = 2
  • Lot size 51–100: Non‑destructive = 4, Destructive = 3
  • Lot size 101–500: Non‑destructive = 5, Destructive = 4
  • Lot size > 500: Non‑destructive = 10, Destructive = 5

• Sampling method: selection shall ensure truly random sampling (for example, numbering pieces and selecting by random number tables).

• Sampling report: must include reference to ISO 2588, lot identification and size, number of items selected, any unusual observations, and any deviations or alternative procedures used.

• Flexibility: Clause 4 allows parties to agree a different procedure or adapt numbers depending on test reliability, property variation, and testing error.

Practical applications

• Quality control in leather manufacturing and finishing operations.
• Incoming inspection of leather lots by tanneries, converters, footwear and leather goods manufacturers.
• Test laboratories preparing gross samples for standardized testing (physical, chemical, or fastness tests).
• Procurement and acceptance sampling during trade to ensure representative sample sizes for contract testing.

Who uses this standard

• Leather technologists, quality managers, laboratory technicians, procurement and inspection teams, and standards bodies involved in leather testing and trade.

Related standards

• ISO 3534-2 - Statistics: vocabulary and terms used for applied statistics (normative reference in ISO 2588).
• EN ISO 2588:2014 is the CEN-endorsed version of ISO 2588:2014.

Using EN ISO 2588:2014 helps ensure consistent, defensible leather sampling practices that support reliable test results and transparent reporting in manufacturing and trade.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2014
1DGRPHãþD
SIST ISO 2588:1998
8VQMH9]RUþHQMHâWHYLORY]RUþQLKNRåL]SURL]YRGQHãDUåH,62
Leather - Sampling - Number of items for a gross sample (ISO 2588:2014)
Leder - Probenentnahme - Anzahl der Einzelstücke für eine Gesamtprobe (ISO
2588:2014)
Cuir - Échantillonnage - Nombre d'unités élémentaires de l'échantillon global (ISO
2588:2014)
Ta slovenski standard je istoveten z: EN ISO 2588:2014
ICS:
59.140.30 Usnje in krzno Leather and furs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 2588
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2014
ICS 59.140.30
English Version
Leather - Sampling - Number of items for a gross sample (ISO
2588:2014)
Cuir - Échantillonnage - Nombre d'unités élémentaires de Leder - Probenentnahme - Anzahl der Einzelstücke für eine
l'échantillon global (ISO 2588:2014) Gesamtprobe (ISO 2588:2014)
This European Standard was approved by CEN on 4 July 2014.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2588:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 2588:2014) has been prepared by IULTCS “International Union of Leather
Technologists and Chemists Societies" in collaboration with Technical Committee CEN/TC 289 “Leather” the
secretariat of which is held by UNI.
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 January 2015, and conflicting national standards shall be withdrawn at
the latest by January 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2588:2014 has been approved by CEN as EN ISO 2588:2014 without any modification.
INTERNATIONAL ISO
STANDARD 2588
IULTCS/IUF 110
Third edition
2014-07-15
Leather — Sampling — Number of
items for a gross sample
Cuir — Échantillonnage — Nombre d’unités élémentaires de
l’échantillon global
Reference numbers
ISO 2588:2014(E)
IULTCS/IUF 110:2014(E)
©
ISO 2014
ISO 2588:2014(E)
IULTCS/IUF 110:2014(E)
© ISO 2014
All rights reserved. Unless otherwise specified, 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.
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Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO 2588:2014(E)
IULTCS/IUF 110:2014(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Method of sampling .
...