Leather - Chemical tests - Quantitative analysis of tanning agents by filter method (ISO 14088:2012)

ISO 14088:2012 specifies a test method for the determination of tanning agents through filteration of all vegetable and synthetic tanning products.

Leder - Chemische Prüfungen - Quantitative Analyse von Gerbstoffen durch Filterverfahren (ISO 14088:2012)

Diese Internationale Norm beschreibt ein Prüfverfahren zur Bestimmung von Gerbstoffen durch Filterverfahren in sämtlichen pflanzlichen und synthetischen Gerbmitteln.

Cuir - Essais chimiques - Analyse quantitative des agents de tannage par la méthode au filtre cloche (ISO 14088:2012)

L'ISO 14088:2012 spécifie une méthode d'essai permettant de déterminer les agents de tannage par filtration de tous les produits de tannage végétaux et synthétiques.

Usnje - Kemični preskusi - Kvantitativna analiza sredstev za strojenje s filtrsko metodo (ISO 14088:2012)

Ta dokument opisuje metodo za določanje sredstev za strojenje v vseh rastlinskih in sintetičnih izdelkih za strojenje.

General Information

Status
Withdrawn
Publication Date
31-Jan-2012
Withdrawal Date
07-Apr-2020
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
08-Apr-2020

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SLOVENSKI STANDARD
SIST EN ISO 14088:2012
01-maj-2012

8VQMH.HPLþQLSUHVNXVL.YDQWLWDWLYQDDQDOL]DVUHGVWHY]DVWURMHQMHVILOWUVNR

PHWRGR ,62

Leather - Chemical tests - Quantitative analysis of tanning agents by filter method (ISO

14088:2012)

Leder - Chemische Prüfung - Quantitative Analyse von Gerbstoffen durch Filterverfahren

(ISO 14088:2012)

Cuir - Essais chimiques - Analyse quantitative des agents tannants par la méthode au

filtre-cloche (ISO 14088:2012)
Ta slovenski standard je istoveten z: EN ISO 14088:2012
ICS:
59.140.30 Usnje in krzno Leather and furs
SIST EN ISO 14088:2012 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 14088:2012
---------------------- Page: 2 ----------------------
SIST EN ISO 14088:2012
EUROPEAN STANDARD
EN ISO 14088
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2012
ICS 59.140.30
English Version
Leather - Chemical tests - Quantitative analysis of tanning
agents by filter method (ISO 14088:2012)

Cuir - Essais chimiques - Analyse quantitative des agents Leder - Chemische Prüfung - Quantitative Analyse von

de tannage par la méthode au filtre cloche (ISO Gerbstoffen durch Filterverfahren (ISO 14088:2012)

14088:2012)
This European Standard was approved by CEN on 31 January 2012.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14088:2012: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 14088:2012
EN ISO 14088:2012 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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SIST EN ISO 14088:2012
EN ISO 14088:2012 (E)
Foreword

This document (EN ISO 14088:2012) has been prepared by Technical Committee CEN/TC 289 “Leather”, the

secretariat of which is held by UNI, in collaboration with Technical Committee IULTCS “International Union of

Leather Technologists and Chemists Societies”.

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 August 2012, and conflicting national standards shall be withdrawn at

the latest by August 2012.

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, 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.
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SIST EN ISO 14088:2012
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SIST EN ISO 14088:2012
INTERNATIONAL ISO
STANDARD 14088
IULTCS/IUC
First edition
2012-02-01
Leather — Chemical tests — Quantitative
analysis of tanning agents by filter
method
Cuir — Essais chimiques — Analyse quantitative des agents de
tannage par la méthode au filtre cloche
Reference number
ISO 14088:2012(E)
IULTCS/IUC 32:2012(E)
ISO 2012
---------------------- Page: 7 ----------------------
SIST EN ISO 14088:2012
ISO 14088:2012(E)
IULTCS/IUC 32:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56  CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
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SIST EN ISO 14088:2012
ISO 14088:2012(E)
IULTCS/IUC 32:2012(E)
Contents Page

Foreword ............................................................................................................................................................ iv

1 Scope ...................................................................................................................................................... 1

2 Normative references ............................................................................................................................ 1

3 Principle ................................................................................................................................................. 1

4 Reagents ................................................................................................................................................ 1

5 Apparatus ............................................................................................................................................... 1

6 Sampling and sample preparation ....................................................................................................... 3

7 Instrumental analysis ............................................................................................................................ 4

7.1 Preparation of the analytical solution ................................................................................................. 4

7.1.1 Vegetable tanning agents in powder/solid form ................................................................................ 4

7.1.2 Vegetable tanning agents in liquid form ............................................................................................. 4

7.1.3 Synthetic tanning agents in powder form ........................................................................................... 4

7.1.4 Synthetic tanning agents in liquid form .............................................................................................. 4

7.1.5 Vegetable tanning agents organic solvent extracted in powder form ............................................. 4

7.2 Preparation of the bell ........................................................................................................................... 5

7.3 De-tanning the analytical solution (determination of the non-tanning agents) .............................. 5

7.4 Determination of soluble substances ................................................................................................. 5

7.5 Determination of total solids ................................................................................................................ 6

8 Calculation and expression of the results .......................................................................................... 6

9 Test report .............................................................................................................................................. 7

Annex A (informative) Approximate quantity of vegetable tannic extract agent in powder/solid

form to be weighed ................................................................................................................................ 8

Annex B (normative) Determination of hide powder blank value .................................................................. 9

Annex C (informative) Suppliers of hide powder ........................................................................................... 10

© ISO 2012 – All rights reserved iii
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SIST EN ISO 14088:2012
ISO 14088:2012(E)
IULTCS/IUC 32:2012(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

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 14088 was prepared by the Chemical Test Commission of the International Union of Leather

Technologists and Chemists Societies (IUC Commission, IULTCS) in collaboration with the European

Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of which is

held by UNI, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna

Agreement).

IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further the

advancement of leather science and technology. IULTCS has three Commissions, which are responsible for

establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an

international standardizing body for the preparation of test methods for leather.

iv © ISO 2012 – All rights reserved
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SIST EN ISO 14088:2012
ISO 14088:2012(E)
INTERNATIONAL STANDARD
IULTCS/IUC 32:2012(E)
Leather — Chemical tests — Quantitative analysis of tanning
agents by filter method
1 Scope

This International Standard specifies a test method for the determination of tanning agents through filtration of

all vegetable and synthetic tanning products.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.
ISO 3696, Water for analytical laboratory use — Specification and test methods
3 Principle

Indirect gravimetric analysis of vegetable and synthetic tanning agents through fixing of the absorbent

compounds on low-chromed hide powder.
4 Reagents

4.1 Distilled water, freshly prepared according to ISO 3696 (Water for analytical laboratory use, Grade 3).

The pH value of the water shall be between 5 and 6. When using methyl red, the water should not turn red.

The evaporation residue of 100 ml should be less than 1 mg.

4.2 Hide powder , containing not more than 0,5 % chromium oxide and with a humidity not more than

13 %.
The blank value of the hide powder shall be calculated according to Annex B.

4.3 Gelatine solution, of 1 g gelatine and 10 g sodium chloride, filled up to 100 ml with distilled water,

adjusted to pH  4,7.
5 Apparatus

The glass equipment shall be resistant to the action of distilled water. The flasks and tubes shall be Class A.

Use normal laboratory equipment and, in particular, the following.
5.1 Desiccator, with an airtight cover and containing silica orange gel.
1) See Annex C.
© ISO 2012 – All rights reserved 1
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SIST EN ISO 14088:2012
ISO 14088:2012(E)
IULTCS/IUC 32:2012(E)
5.2 Evaporation dishes, suitable for slowly evaporating water.
These shall be short with flat bases and measure 7 cm to 8,5 cm in diameter.

Use silver dishes. If this is not possible, preferably use dishes made of stainless steel or, if necessary, ceramic

or glass.
5.3 Water bath.

5.4 Drying oven, whose temperature shall be kept at the operating range of (102  2) °C.

5.5 Analytical balance, with a precision of 0,2 mg at a load of 200 g.
5.6 Technical balance, with a precision of 0,1 g at a load of 1 000 g.

5.7 Procter bell (see Figure 1), composed of a cylindrical glass bell (length of the cylindrical part:

90 mm  1 mm; internal diameter of the cylindrical part: 28 mm  1 mm). A perfora

...

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