1、Textiles - Quantitative chemical analysisPart 7: Mixtures of polyamide with certain other fibres (method using formic acid) (ISO 1833-7:2017)BS EN ISO 1833-7:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO
2、1833-7 September 2017 ICS 59.060.01 Supersedes EN ISO 1833-7:2010English Version Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibres (method using formic acid) (ISO 1833-7:2017) Textiles - Analyse chimique quantitative - Partie 7: Mlanges de polyamide
3、avec certaines autres fibres (mthode lacide formique) (ISO 1833-7:2017) Textilien - Quantitative chemische Analysen - Teil 7: Mischungen aus Polyamid- und bestimmten anderen Fasern (Ameisensure-Verfahren) (ISO 1833-7:2017)This European Standard was approved by CEN on 22 August 2017. CEN members are
4、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 th
5、e 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 Cent
6、re 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, Lithuani
7、a, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 1
8、7, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-7:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 1833-7:2017. It is identical to ISO 1833-7:2017. It supersedes BS EN
9、 ISO 1833-7:2010, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee TCI/80, Chemical testing of textiles.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all th
10、e necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 93118 5ICS 59.060.01Compliance with a British Standard cannot confer immunity from legal obligations.This British Stan
11、dard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 18337:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-7 September 2017 ICS 59.060.01
12、Supersedes EN ISO 1833-7:2010English Version Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibres (method using formic acid) (ISO 1833-7:2017) Textiles - Analyse chimique quantitative - Partie 7: Mlanges de polyamide avec certaines autres fibres (mthode
13、 lacide formique) (ISO 1833-7:2017) Textilien - Quantitative chemische Analysen - Teil 7: Mischungen aus Polyamid- und bestimmten anderen Fasern (Ameisensure-Verfahren) (ISO 1833-7:2017)This European Standard was approved by CEN on 22 August 2017. CEN members are bound to comply with the CEN/CENELEC
14、 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 t
15、o 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 offici
16、al 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, N
17、orway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All righ
18、ts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-7:2017 EBS EN ISO 18337:2017EN ISO 1833-7:2017 (E) 3 European foreword This document (EN ISO 1833-7:2017) has been prepared by Technical Committee ISO/TC 38 ” Textiles” in collaboration
19、with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. 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 March 2018, and conflicting national st
20、andards shall be withdrawn at the latest by March 2018. 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 ISO 1833-7:2010.
21、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, Ger
22、many, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1833-7:2017 has been approved by CEN as EN I
23、SO 1833-7:2017 without any modification. ISO 1833-7:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Reagents 16 Apparatus . 27 Test procedure 28 Calculation and expression of results . 29 Precision . 2Bibliography 3 ISO 2017 All rights reserved iiiConte
24、nts PageBS EN ISO 18337:2017ISO 1833-7:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Reagents 16 Apparatus . 27 Test procedure 28 Calculation and expression of results . 29 Precision . 2Bibliography 3 ISO 2017 All rights reserved iiiContents PageBS EN
25、 ISO 18337:2017ISO 1833-7:2017(E)ForewordISO (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 inter
26、ested 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
27、 Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO docume
28、nts should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).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 responsi
29、ble for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given
30、for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principle
31、s in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 38, Textiles.This second edition cancels and replaces the first edition (ISO 1833-7:2006), which has been technically revised.The main changes
32、 compared to the previous edition are as follows: the title was changed from “Mixtures of polymide and certain other fibres” to “Mixtures of polymide with certain other fibres”; in Clause 1, some remaining fibres were added; in Clause 8, a specific d-factor for melamine was added; in Clause 9, “perc
33、entage point” to avoid confusion was added.A list of all parts in the ISO 1833 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 18337:2017ISO 1833-7:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards
34、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 organizat
35、ions, 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.The procedures used to develop this document and those intended for its furth
36、er maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ direct
37、ives).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. Details of any patent rights identified during the development of the document will be in the I
38、ntroduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO sp
39、ecific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Commi
40、ttee ISO/TC 38, Textiles.This second edition cancels and replaces the first edition (ISO 1833-7:2006), which has been technically revised.The main changes compared to the previous edition are as follows: the title was changed from “Mixtures of polymide and certain other fibres” to “Mixtures of polym
41、ide with certain other fibres”; in Clause 1, some remaining fibres were added; in Clause 8, a specific d-factor for melamine was added; in Clause 9, “percentage point” to avoid confusion was added.A list of all parts in the ISO 1833 series can be found on the ISO website.iv ISO 2017 All rights reser
42、ved INTERNATIONAL STANDARD ISO 1833-7:2017(E)Textiles Quantitative chemical analysis Part 7: Mixtures of polyamide with certain other fibres (method using formic acid)1 ScopeThis document specifies a method, using formic acid, to determine the mass percentage of polyamide fibre, after removal of non
43、-fibrous matter, in textiles made of mixtures of polyamidewith cotton, viscose, cupro, modal, lyocell, polyester, polypropylene, chlorofibre, acrylic, glass fibre, elastomultiester, elastolefin and melamine, or wool (if the wool content is less than or equal to 25 %), or animal hair fibres.This docu
44、ment does not apply when the wool content exceeds 25 %; ISO 1833-4 applies.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For un
45、dated references, the latest edition of the referenced document (including any amendments) applies.ISO 1833-1, Textiles Quantitative chemical analysis Part 1: General principles of testing3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological
46、databases for use in standardization at the following addresses: ISO Online browsing platform: available at h t t p s :/ www .iso .org/ obp IEC Electropedia: available at h t t p :/ www .electropedia .org/ 4 PrincipleThe polyamide is dissolved out from a known dry mass of the mixture, with aqueous f
47、ormic acid. The residue is collected, washed, dried, and weighed; its mass, corrected if necessary, is expressed as a percentage of the dry mass of the mixture. The percentage of polyamide fibre is found by the difference.5 ReagentsUse the reagents described in ISO 1833-1 together with those given i
48、n 5.1 and 5.2. ISO 2017 All rights reserved 1BS EN ISO 18337:2017ISO 1833-7:2017(E)5.1 Formic acid, 80 % (mass fraction) ( = 1,19 g/ml at 20 C).Dilute 880 ml of 90 % (mass fraction) formic acid ( = 1,20 g/ml at 20 C) to 1 l with water. Alternatively, dilute 780 ml of 98 % to 100 % (mass fraction) fo
49、rmic acid ( = 1,22 g/ml at 20 C) to 1 l with water.The concentration is not critical within the range 77 % to 83 % (mass fraction) formic acid.5.2 Ammonia, dilute solution.Dilute 80 ml of concentrated ammonia solution ( = 0,88 g/ml at 20 C) to 1 l with water.6 ApparatusUse the apparatus described in ISO 1833-1 together with that given in 6.1.6.1 Conical flask, minimum capacity 200 ml, glass-stoppered.7 Test procedureFollow the general procedure given in ISO 1833-1, and then proceed as follows.To the speci
