BS ISO 699-2015 en_9495 Pulps Determination of alkali resistance《纸浆 耐碱性的测定》.pdf
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1、BSI Standards Publication BS ISO 699:2015 Pulps Determination of alkali resistanceBS ISO 699:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 699:2015. It supersedes BS 4499:1984 which is withdrawn. The UK participation in its preparation was entrusted to
2、 Technical Committee PAI/11, Methods of test for paper, board and pulps. A list of organizations represented on this committee can be obtained 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 a
3、pplication. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 86893 1 ICS 85.040 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy
4、 Committee on 30 April 2015. Amendments issued since publication Date Text affectedBS ISO 699:2015 ISO 2015 Pulps Determination of alkali resistance Ptes Dtermination de la rsistance aux solutions dhydroxyde de sodium INTERNATIONAL STANDARD ISO 699 Third edition 2015-04-01 Reference number ISO 699:2
5、015(E)BS ISO 699:2015ISO 699:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015 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
6、, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs 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-m
7、ail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 699:2015ISO 699:2015(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Principle 1 5 Reagents 1 6 Apparatus . 2 7 Preparation of the test sample . 2 8 Procedure. 3 8.1 Test portion 3 8.
8、2 Determination . 3 9 Expression of results 4 9.1 Method of calculation and formula . 4 9.2 Precision and expression of results 4 10 Test report . 4 Bibliography 5 ISO 2015 All rights reserved iii Contents PageBS ISO 699:2015ISO 699:2015(E) Foreword ISO (the International Organization for Standardiz
9、ation) 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
10、 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. The procedures used t
11、o 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 documents should be noted. This document was drafted in accordance with the editorial rules of t
12、he 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 responsible for identifying any or all such patent rights. Details of any patent rights identified d
13、uring 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 for the convenience of users and does not constitute an endorsement. For an explanation on the
14、 meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information. The committee responsible for this document is ISO/T
15、C 6, Paper, board and pulps. This third edition cancels and replaces the second edition (ISO 699:1982), of which it constitutes a minor revision.iv ISO 2015 All rights reservedBS ISO 699:2015ISO 699:2015(E) Introduction The object of both this International Standard and ISO 692, Pulps Determination
16、of alkali solubility, is to permit the study of the behaviour of pulps in the presence of alkali solutions, but their fields of application are different. While this International Standard describes the gravimetric determination of the alkali insoluble constituents of the pulp and applies to all cat
17、egories of pulps, ISO 692 describes the volumetric determination of the alkali soluble constituents of the pulp and is applied preferably to the control of bleached pulps. ISO 2015 All rights reserved vBS ISO 699:2015BS ISO 699:2015Pulps Determination of alkali resistance W AR NIN G Th e m e t h o d
18、 sp ecif i e d in t his I n te rna t i o nal S t an dard in v o l v e s t h e us e o f hazard o us chemicals. Appropriate precautions are to be taken to ensure the proper use and disposal of these chemicals. 1 Scope This International Standard specifies a method for the determination of the alkali-i
19、nsoluble fraction of pulps using sodium hydroxide solution of fixed concentration. The sodium hydroxide concentrations most frequently used are 18, 10, and 5 % (m/m). The method is applicable to all kinds of pulp. 2 Normative references The following documents, in whole or in part, are normatively r
20、eferenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 638, Paper, board and pulps Determination of dry matter content Ov
21、en-drying method ISO 4793, Laboratory sintered (fritted) filters Porosity grading, classification and designation 3 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. 3.1 R-value alkali resistance; the insoluble fraction expressed as a percentage b
22、y mass of the oven-dry pulp 3.2 R 18, R 10, R 5 , or R c R-values in which the indices 18, 10, 5, or c refer to the chosen concentration in grams of sodium hydroxide per 100 g of solution 4 Principle Defibreing of the pulp under specified conditions in sodium hydroxide solution of chosen concentrati
23、on. Filtering of the insoluble fraction, washing with sodium hydroxide solution of the same concentration, and temperature as that used for defibreing and acidification, washing, drying, and weighing. 5 Reagents Use only reagents of recognized analytical grade and only distilled water or water of eq
24、uivalent purity. 5.1 Sodium hydroxide, solution of known concentration containing less than 1 g of sodium carbonate per litre (see the notes), for example: (5,39 0,03) mol/l solution, containing (18,0 0,1) g of sodium hydroxide per 100 g of solution ( 20= 1,197 2 g/ml), equivalent to (215,5 1,0) g o
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