1、Jewellery Determination ofsilver in silver jewellery alloys Volumetric (potentiometric)method using potassiumbromideBS EN ISO 11427:2016(ISO 11427:2014)BSI Standards PublicationBS EN ISO 11427:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 11427:2016.
2、It is identical to ISO 11427:2014. It supersedes BS ISO 11427:2014 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/53, Specifications and test methods for jewellery and horology.A list of organizations represented on this committee can be obtained
3、on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 93669 2ICS 39.060Compliance with a Bri
4、tish Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2014.Amendments/corrigenda issued since publicationDate Text affected31 October 2016 This corrigendum renumbers BS ISO 114
5、27:2014 as BS EN ISO 11427:2016g3g3g3g8g24g21g18g19g8g4g17g3g22g23g4g17g7g4g21g7g3g17g18g21g16g8g3g8g24g21g18g19g50g8g17g17g8g3g8g24g21g18g19g34g12g22g6g11g8g3g17g18g21g16g3EN ISO 11427 g3 g3g3g18g133g150g145g132g135g148g3g884g882g883g888g3g12g6g22g3g885g891g484g882g888g882g3 g22g151g146g135g148g149
6、g135g134g135g149g3g8g17g3g885g883g886g884g889g483g883g891g891g886g8g144g137g142g139g149g138g3g25g135g148g149g139g145g144g3g3g13g135g153g135g142g142g135g148g155g3g486g3g7g135g150g135g148g143g139g144g131g150g139g145g144g3g145g136g3g149g139g142g152g135g148g3g139g144g3g149g139g142g152g135g148g3g140g135g
7、153g135g142g142g135g148g155g3g131g142g142g145g155g149g3g486g3g25g145g142g151g143g135g150g148g139g133g3g523g146g145g150g135g144g150g139g145g143g135g150g148g139g133g524g3g143g135g150g138g145g134g3g151g149g139g144g137g3g146g145g150g131g149g149g139g151g143g3g132g148g145g143g139g134g135g3g523g12g22g18g3g
8、883g883g886g884g889g483g884g882g883g886g524g3g13g145g131g139g142g142g135g148g139g135g481g3g132g139g140g145g151g150g135g148g139g135g3g486g3g7g145g149g131g137g135g3g134g135g3g142g821g131g148g137g135g144g150g3g134g131g144g149g3g142g135g149g3g131g142g142g139g131g137g135g149g3g134g821g131g148g137g135g144
9、g150g3g146g145g151g148g3g142g131g3g132g139g140g145g151g150g135g148g139g135g486g140g145g131g139g142g142g135g148g139g135g3g486g3g16g177g150g138g145g134g135g3g152g145g142g151g143g177g150g148g139g147g151g135g3g523g146g145g150g135g144g150g139g145g143g177g150g148g139g147g151g135g524g3g151g150g139g142g139g
10、149g131g144g150g3g142g135g3g132g148g145g143g151g148g135g3g134g135g3g146g145g150g131g149g149g139g151g143g3g523g12g22g18g3g883g883g886g884g889g483g884g882g883g886g524g3g3 g22g133g138g143g151g133g141g3g486g3g5g135g149g150g139g143g143g151g144g137g3g152g145g144g3g22g139g142g132g135g148g3g139g144g3g22g139
11、g142g132g135g148g149g133g138g143g151g133g141g142g135g137g139g135g148g151g144g137g135g144g3g486g3g25g145g142g151g143g135g150g148g139g149g133g138g135g149g3g523g146g145g150g135g144g150g139g145g143g135g150g148g139g149g133g138g135g149g524g3g25g135g148g136g131g138g148g135g144g3g151g144g150g135g148g3g25g13
12、5g148g153g135g144g134g151g144g137g3g152g145g144g3g14g131g142g139g151g143g132g148g145g143g139g134g3g523g12g22g18g3g883g883g886g884g889g483g884g882g883g886g524g3g23g138g139g149g3g8g151g148g145g146g135g131g144g3g22g150g131g144g134g131g148g134g3g153g131g149g3g131g146g146g148g145g152g135g134g3g132g155g3g
13、6g8g17g3g145g144g3g884g888g3g4g151g137g151g149g150g3g884g882g883g888g484g3g3g3g6g8g17g3g143g135g143g132g135g148g149g3g131g148g135g3g132g145g151g144g134g3g150g145g3g133g145g143g146g142g155g3g153g139g150g138g3g150g138g135g3g6g8g17g512g6g8g17g8g15g8g6g3g12g144g150g135g148g144g131g142g3g21g135g137g151g1
14、42g131g150g139g145g144g149g3g153g138g139g133g138g3g149g150g139g146g151g142g131g150g135g3g150g138g135g3g133g145g144g134g139g150g139g145g144g149g3g136g145g148g3g137g139g152g139g144g137g3g150g138g139g149g3g8g151g148g145g146g135g131g144g3g22g150g131g144g134g131g148g134g3g150g138g135g3g149g150g131g150g15
15、1g149g3g145g136g3g131g3g144g131g150g139g145g144g131g142g3g149g150g131g144g134g131g148g134g3g153g139g150g138g145g151g150g3g131g144g155g3g131g142g150g135g148g131g150g139g145g144g484g3g24g146g486g150g145g486g134g131g150g135g3g142g139g149g150g149g3g131g144g134g3g132g139g132g142g139g145g137g148g131g146g1
16、38g139g133g131g142g3g148g135g136g135g148g135g144g133g135g149g3g133g145g144g133g135g148g144g139g144g137g3g149g151g133g138g3g144g131g150g139g145g144g131g142g3g149g150g131g144g134g131g148g134g149g3g143g131g155g3g132g135g3g145g132g150g131g139g144g135g134g3g145g144g3g131g146g146g142g139g133g131g150g139g1
17、45g144g3g150g145g3g150g138g135g3g6g8g17g486g6g8g17g8g15g8g6g3g16g131g144g131g137g135g143g135g144g150g3g6g135g144g150g148g135g3g145g148g3g150g145g3g131g144g155g3g6g8g17g3g143g135g143g132g135g148g484g3g3g23g138g139g149g3g8g151g148g145g146g135g131g144g3g22g150g131g144g134g131g148g134g3g135g154g139g149g
18、150g149g3g139g144g3g150g138g148g135g135g3g145g136g136g139g133g139g131g142g3g152g135g148g149g139g145g144g149g3g523g8g144g137g142g139g149g138g481g3g9g148g135g144g133g138g481g3g10g135g148g143g131g144g524g484g3g4g3g152g135g148g149g139g145g144g3g139g144g3g131g144g155g3g145g150g138g135g148g3g142g131g144g1
19、37g151g131g137g135g3g143g131g134g135g3g132g155g3g150g148g131g144g149g142g131g150g139g145g144g3g151g144g134g135g148g3g150g138g135g3g148g135g149g146g145g144g149g139g132g139g142g139g150g155g3g145g136g3g131g3g6g8g17g3g143g135g143g132g135g148g3g139g144g150g145g3g139g150g149g3g145g153g144g3g142g131g144g13
20、7g151g131g137g135g3g131g144g134g3g144g145g150g139g136g139g135g134g3g150g145g3g150g138g135g3g6g8g17g486g6g8g17g8g15g8g6g3g16g131g144g131g137g135g143g135g144g150g3g6g135g144g150g148g135g3g138g131g149g3g150g138g135g3g149g131g143g135g3g149g150g131g150g151g149g3g131g149g3g150g138g135g3g145g136g136g139g13
21、3g139g131g142g3g152g135g148g149g139g145g144g149g484g3g3g6g8g17g3g143g135g143g132g135g148g149g3g131g148g135g3g150g138g135g3g144g131g150g139g145g144g131g142g3g149g150g131g144g134g131g148g134g149g3g132g145g134g139g135g149g3g145g136g3g4g151g149g150g148g139g131g481g3g5g135g142g137g139g151g143g481g3g5g151
22、g142g137g131g148g139g131g481g3g6g148g145g131g150g139g131g481g3g6g155g146g148g151g149g481g3g6g156g135g133g138g3g21g135g146g151g132g142g139g133g481g3g7g135g144g143g131g148g141g481g3g8g149g150g145g144g139g131g481g3g9g139g144g142g131g144g134g481g3g9g145g148g143g135g148g3g28g151g137g145g149g142g131g152g3
23、g21g135g146g151g132g142g139g133g3g145g136g3g16g131g133g135g134g145g144g139g131g481g3g9g148g131g144g133g135g481g3g10g135g148g143g131g144g155g481g3g10g148g135g135g133g135g481g3g11g151g144g137g131g148g155g481g3g12g133g135g142g131g144g134g481g3g12g148g135g142g131g144g134g481g3g12g150g131g142g155g481g3g1
24、5g131g150g152g139g131g481g3g15g139g150g138g151g131g144g139g131g481g3g15g151g154g135g143g132g145g151g148g137g481g3g16g131g142g150g131g481g3g17g135g150g138g135g148g142g131g144g134g149g481g3g17g145g148g153g131g155g481g3g19g145g142g131g144g134g481g3g19g145g148g150g151g137g131g142g481g3g21g145g143g131g14
25、4g139g131g481g3g22g142g145g152g131g141g139g131g481g3g22g142g145g152g135g144g139g131g481g3g22g146g131g139g144g481g3g22g153g135g134g135g144g481g3g22g153g139g150g156g135g148g142g131g144g134g481g3g23g151g148g141g135g155g3g131g144g134g24g144g139g150g135g134g3g14g139g144g137g134g145g143g484g3g3g3g3g3g8g24
26、g21g18g19g8g4g17g3g6g18g16g16g12g23g23g8g8g3g9g18g21g3g22g23g4g17g7g4g21g7g12g29g4g23g12g18g17g3g6g18g16g12g23g50g3g8g24g21g18g19g50g8g17g3g7g8g3g17g18g21g16g4g15g12g22g4g23g12g18g17g3g8g24g21g18g19g34g12g22g6g11g8g22g3g14g18g16g12g23g8g8g3g9g111g21g3g17g18g21g16g24g17g10g3g3g3g3CEN-CENELECg3Managem
27、ent Centre: Avenue Marnix 17, B-1000 Brussels g825g3g884g882g883g888g3g6g8g17g3 g4g142g142g3g148g139g137g138g150g149g3g145g136g3g135g154g146g142g145g139g150g131g150g139g145g144g3g139g144g3g131g144g155g3g136g145g148g143g3g131g144g134g3g132g155g3g131g144g155g3g143g135g131g144g149g3g148g135g149g135g148
28、g152g135g134g3g153g145g148g142g134g153g139g134g135g3g136g145g148g3g6g8g17g3g144g131g150g139g145g144g131g142g3g16g135g143g132g135g148g149g484g3g21g135g136g484g3g17g145g484g3g8g17g3g12g22g18g3g883g883g886g884g889g483g884g882g883g888g3g8European foreword The text of ISO 11427:2014 has been prepared by
29、Technical Committee ISO/TC 174 “Jewellery” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11427:2016. 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
30、 April 2017, and conflicting national standards shall be withdrawn at the latest by April 2017. 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 paten
31、t rights. This document supersedes EN 31427:1994. 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,
32、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 11
33、427:2014 has been approved by CEN as EN ISO 11427:2016 without any modification. BS EN ISO 11427:2016g8g17g3g12g22g18g3g883g883g886g884g889g483g884g882g883g888g3g525g8g526BS ISO 11427:2014ISO 11427:2014(E)Contents g19g131g137g135Foreword ivIntroduction v1 Scope .12 Normative references 13 Principle
34、14 Reagents 15 Apparatus .26 Sampling 27 Procedure.2g889g484g883g3 g7g135g150g135g148g143g139g144g131g150g139g145g144g3g145g136g3g146g145g150g131g149g149g139g151g143g3g132g148g145g143g139g134g135g3g136g131g133g150g145g148 2g889g484g884g3 g7g135g150g135g148g143g139g144g131g150g139g145g144 .38 Calcula
35、tion and expression of results .3g890g484g883g3 g6g131g142g133g151g142g131g150g139g145g144 3g890g484g884g3 g21g135g146g135g131g150g131g132g139g142g139g150g155 .39 Test report .4Bibliography 5 ISO 2014 All rights reserved iiiBS EN ISO 11427:2016g12g22g18g3g883g883g886g884g889g483g884g882g883g886g3g52
36、5g8g526BS ISO 11427:2014ISO 11427:2014(E)Forewordg12g22g18g3g523g150g138g135g3g12g144g150g135g148g144g131g150g139g145g144g131g142g3g18g148g137g131g144g139g156g131g150g139g145g144g3g136g145g148g3g22g150g131g144g134g131g148g134g139g156g131g150g139g145g144g524g3g139g149g3g131g3g153g145g148g142g134g153g
37、139g134g135g3g136g135g134g135g148g131g150g139g145g144g3g145g136g3g144g131g150g139g145g144g131g142g3g149g150g131g144g134g131g148g134g149g3g132g145g134g139g135g149g3g523g12g22g18g3g143g135g143g132g135g148g3g132g145g134g139g135g149g524g484g3g23g138g135g3g153g145g148g141g3g145g136g3g146g148g135g146g131g
38、148g139g144g137g3g12g144g150g135g148g144g131g150g139g145g144g131g142g3g22g150g131g144g134g131g148g134g149g3g139g149g3g144g145g148g143g131g142g142g155g3g133g131g148g148g139g135g134g3g145g151g150g3g150g138g148g145g151g137g138g3g12g22g18g3g150g135g133g138g144g139g133g131g142g3g133g145g143g143g139g150g1
39、50g135g135g149g484g3g8g131g133g138g3g143g135g143g132g135g148g3g132g145g134g155g3g139g144g150g135g148g135g149g150g135g134g3g139g144g3g131g3g149g151g132g140g135g133g150g3g136g145g148g3g153g138g139g133g138g3g131g3g150g135g133g138g144g139g133g131g142g3g133g145g143g143g139g150g150g135g135g3g138g131g149g3
40、g132g135g135g144g3g135g149g150g131g132g142g139g149g138g135g134g3g138g131g149g3g150g138g135g3g148g139g137g138g150g3g150g145g3g132g135g3g148g135g146g148g135g149g135g144g150g135g134g3g145g144g3g150g138g131g150g3g133g145g143g143g139g150g150g135g135g484g3g12g144g150g135g148g144g131g150g139g145g144g131g14
41、2g3g145g148g137g131g144g139g156g131g150g139g145g144g149g481g3g137g145g152g135g148g144g143g135g144g150g131g142g3g131g144g134g3g144g145g144g486g137g145g152g135g148g144g143g135g144g150g131g142g481g3g139g144g3g142g139g131g139g149g145g144g3g153g139g150g138g3g12g22g18g481g3g131g142g149g145g3g150g131g141g1
42、35g3g146g131g148g150g3g139g144g3g150g138g135g3g153g145g148g141g484g3g12g22g18g3g133g145g142g142g131g132g145g148g131g150g135g149g3g133g142g145g149g135g142g155g3g153g139g150g138g3g150g138g135g3g12g144g150g135g148g144g131g150g139g145g144g131g142g3g8g142g135g133g150g148g145g150g135g133g138g144g139g133g1
43、31g142g3g6g145g143g143g139g149g149g139g145g144g3g523g12g8g6g524g3g145g144g3g131g142g142g3g143g131g150g150g135g148g149g3g145g136g3g135g142g135g133g150g148g145g150g135g133g138g144g139g133g131g142g3g149g150g131g144g134g131g148g134g139g156g131g150g139g145g144g484g23g138g135g3g146g148g145g133g135g134g151
44、g148g135g149g3g151g149g135g134g3g150g145g3g134g135g152g135g142g145g146g3g150g138g139g149g3g134g145g133g151g143g135g144g150g3g131g144g134g3g150g138g145g149g135g3g139g144g150g135g144g134g135g134g3g136g145g148g3g139g150g149g3g136g151g148g150g138g135g148g3g143g131g139g144g150g135g144g131g144g133g135g3g1
45、31g148g135g3g134g135g149g133g148g139g132g135g134g3g139g144g3g150g138g135g3g12g22g18g512g12g8g6g3g7g139g148g135g133g150g139g152g135g149g481g3g19g131g148g150g3g883g484g3g3g12g144g3g146g131g148g150g139g133g151g142g131g148g3g150g138g135g3g134g139g136g136g135g148g135g144g150g3g131g146g146g148g145g152g131
46、g142g3g133g148g139g150g135g148g139g131g3g144g135g135g134g135g134g3g136g145g148g3g150g138g135g3g134g139g136g136g135g148g135g144g150g3g150g155g146g135g149g3g145g136g3g12g22g18g3g134g145g133g151g143g135g144g150g149g3g149g138g145g151g142g134g3g132g135g3g144g145g150g135g134g484g3g3g23g138g139g149g3g134g1
47、45g133g151g143g135g144g150g3g153g131g149g3g134g148g131g136g150g135g134g3g139g144g3g131g133g133g145g148g134g131g144g133g135g3g153g139g150g138g3g150g138g135g3g135g134g139g150g145g148g139g131g142g3g148g151g142g135g149g3g145g136g3g150g138g135g3g12g22g18g512g12g8g6g3g7g139g148g135g133g150g139g152g135g149
48、g481g3g19g131g148g150g3g884g3g523g149g135g135g3www.iso.org/directives). g4g150g150g135g144g150g139g145g144g3g139g149g3g134g148g131g153g144g3g150g145g3g150g138g135g3g146g145g149g149g139g132g139g142g139g150g155g3g150g138g131g150g3g149g145g143g135g3g145g136g3g150g138g135g3g135g142g135g143g135g144g150g1
49、49g3g145g136g3g150g138g139g149g3g134g145g133g151g143g135g144g150g3g143g131g155g3g132g135g3g150g138g135g3g149g151g132g140g135g133g150g3g145g136g3g146g131g150g135g144g150g3g148g139g137g138g150g149g484g3g12g22g18g3g149g138g131g142g142g3g144g145g150g3g132g135g3g138g135g142g134g3g148g135g149g146g145g144g149g139g132g142g135g3g136g145g148g3g139g134g135g144g150g139g136g155g139g144g137g3g131g144g155g3g145g148g3g131g142g142g3g149g151g133g138g3g146g131g150g135g144g150g3g148g139g137g138g150g149g484g3g3g7g135g150g131g139g142g149g3g145g136g3g131g144g155g3g146g131g150g135g144g150g3g148g139g137g138g1
