1、 STD-BSI BS EN LZL33-ENGL 1778 lb2qbb9 b82327 490 9 BRITISH STANDARD Fruit and vegetable juices - Determination of chloride content - Potentiometric titration method The European Standard EN 12133 : 1997 has the status of a British Standard ICs 67.160.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS P
2、ERMITTED BY COPYRIGHT LAW BS EN 12133 : 1998 STD*BSI BS EN L2133-ENGL 1998 M 1b2LibbS Ob82328 327 Amd. No. BS EN 12133 : 1998 Date Text affected This British Standard, having been prepared under the direction of the Consumer Products and SeMces Sector Board, was published under the authority of the
3、Standards Board and comes into effect on 15 February 1998 Q BSI 1998 National foreword This British Standard is the English language version of EN 12133. The UK participation in its preparation was entrusted to Technical Committee AW/21, Fruit and vegetable juices, which has the responsibility to: -
4、 aid enquirers to understand the text; - present to the responsible European commitke any enquiries on the interpretation, or proposals for change, and keep the UK inkrests informed; - monitor related intemational and European developments and promulgate them in the UK. A list of organizations repre
5、sented on this committee can be obained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondenc
6、e Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN titie page, pages 2 to 6, an inside ba
7、ck cover and a back cover. ISBN O 580 28988 O * * Co STDSBSI BS EN 12133-ENGL 1798 W lb24bb7 Ob82327 2b3 W EUROPEAN mmARD NOm EUROPENNE EuRopAIscHE NORM EN 12133 September 1997 ICs 67.160.20 Descriptors: hit and vegetables juices, chemical analysis, determination of content, chlorides, potentiometri
8、c methods, procedures English version Fruit and vegetable juices - Detemination of chloride content - Potentiometric titration method Jus de fruib et de lgumes - Dosage des chlorures - Mthode de titrage pokntiomtricpe Fnicht- und Gemsesafte - Bestimmung des Chloridgehdks - Potentiometrisches Titsati
9、onsverfahren This European Standard was approved by CEN on 6 September 1997. CEN members are bound to comply with the CENKENELEC 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 biblio
10、graphical references concerning such national standards may be obtained on application to the Central Secretariat 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
11、a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members axe the national standards bodies of Amixia, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norw
12、ax Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normahation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels Q 1997 CEN All rights of exploitation in any form and by any means reserved worl
13、dwide for CEN national Members. Ref. No. EN 12133 : 1997 E STD-BSI BS EN 12L33-ENGL 1998 W 1b2qbb9 b82330 TA5 Page 2 EN 12133 : 1997 Foreword This European Stanard has been prepared by khnid Committee CENirC 174, Fniit and vegetable juices - Methods of anaipis, the Secretanat of which is held by AFN
14、OR. This European Standard shd be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 1998, and conflicting nationai standards shall be withdrawn at the ht by March 1998. According to the CENKENELEC Internal Regulations, the n
15、ational standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finiand, Fiance, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom
16、. Contents Foreword 1 Scope 2 Normative references 3 Symbols 4 Principle 6 Reagents 6 APP- 7 Procedure 8 Calculation 9 Precision 10 Rstreport Annexes A (informative) Bibliography B (informative) Staktical results of the inter-laboratory test Page 2 3 3 3 3 3 3 3 4 5 5 6 6 STD.BSI BS EN LZL33-ENGL 19
17、98 Lb24bb9 b82331 921 m 1 scope This European Standard specifies a potentiometric titration method for the determination of the chloride content of fruit and vegetable juices and related products. 2 Normative references This European Standard incorporates by dated or undated reference, provisions fr
18、om other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For daed references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendme
19、nt or revision. For undated references the latest edition of the publication referred to applies. EN IS0 3696 : 1995 Water for anuiytical labomtorg use - Specfkatwn and test methods (ISO3696: 1987) Precision of test methods - Determination of repeatability and repmducibity for a standanl test method
20、 bg in - a reference to this European Standard; - the date and type of sampling procedure (i known); - the date of receipt; - the date of test; - the test results and units in which they have been expressed; - whether the repeatability of the method has been verified; - any particular points observe
21、d in the course of the test; 9.2 Reproducibility The tomato juice: II = 0,2 g/l. O BSI 1998 STD-BSI BS EN 12133-ENGL 1998 = 1bZYbb 0b8233Li b20 m Sample Number of laboratores retained after eluninating outliers Number of outliers (laboratories) Number of accepted results Page 6 EN U133 : 1997 A B 14
22、 15 3 1 72 75 Annex A (informative) Bibliography Haorn, H. chlorhaltige Extmlctwnsmittel-Ruclcstande in coffeinfiehn Kaffee 56,l-16, 1965. In: Miti. Gebiete Lebensm. Hyg. chloride analysis of wines: L272.33. 76-77,1990. In: The official Jod of the European Communities. Determination of chlo%de conte
23、nt: No. 37, 1991. In: The collected Anaiyses of the international Federation of Fniit Juice Producers. Loose-leaf edition, as of 1996 - Zug: Swiss Fruit Union. Repeatability standard deviation (s,) Repeatability relative standard deviation (Rso, (%) Repeatability iimit (r) Annex B (informative) Stat
24、istical results of the inter-laboratory test in accordance with IS0 5725 : 1986, the following parameters have been defned in an inter-laboratory test. (For iterature pertaining to the method see annex A). The test was conducted by the international Fruit Union, Paris, France. 0,4139 ma 0,0224 gli 1
25、78 o75 172 mgli 091 gn Year of inter-laboratory test 1989 Number of laboratories 17 Number of samples 2 I Mean value (a) I 23,3 mgn I 476gn I Reproducibility standard deviation (SR) (mgli) 2,3542 mg/i Reproducibility relative standard deviation (MDR) (%) I Reproducibility limit (R) I Sample types: A
26、 orange juice; B tomatojuice. O BSI 1998 STD-BSI BS EN 12133-ENGL 1998 D Lb24bb9 Ob82335 5b7 D BS EN 12133 : 1998 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on
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