BS ISO 14436-2010 Pulps - Standard tap water for drainability measurements - Conductivity 40 mS m to 150 mS m《纸浆 排水能力测量用标准自来水 传导率40 mS m至150 mS m》.pdf
《BS ISO 14436-2010 Pulps - Standard tap water for drainability measurements - Conductivity 40 mS m to 150 mS m《纸浆 排水能力测量用标准自来水 传导率40 mS m至150 mS m》.pdf》由会员分享,可在线阅读,更多相关《BS ISO 14436-2010 Pulps - Standard tap water for drainability measurements - Conductivity 40 mS m to 150 mS m《纸浆 排水能力测量用标准自来水 传导率40 mS m至150 mS m》.pdf(18页珍藏版)》请在麦多课文档分享上搜索。
1、BS ISO14436:2010ICS 85.040NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPulps Standard tapwater for drainabilitymeasurements Conductivity 40 mS/mto 150 mS/mThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31
2、 March2010 BSI 2010ISBN 978 0 580 68400 5Amendments/corrigenda issued since publicationDate CommentsBS ISO 14436:2010National forewordThis British Standard is the UK implementation of ISO 14436:2010.The UK participation in its preparation was entrusted to TechnicalCommittee PAI/11, Methods of test f
3、or paper, board and pulps.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cann
4、ot confer immunityfrom legal obligations.BS ISO 14436:2010Reference numberISO 14436:2010(E)ISO 2010INTERNATIONAL STANDARD ISO14436First edition2010-03-01Pulps Standard tap water for drainability measurements Conductivity 40 mS/m to 150 mS/m Ptes Eau du robinet normalise pour mesurages de laptitude l
5、gouttage Conductivit comprise entre 40 mS/m et 150 mS/m BS ISO 14436:2010ISO 14436:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are l
6、icensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details o
7、f the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relati
8、ng to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 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 photo
9、copying and microfilm, without permission in writing 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-mail copyrightiso.org Web www.iso.org Published in Swit
10、zerland ii ISO 2010 All rights reservedBS ISO 14436:2010ISO 14436:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Principle1 5 Reagents for preparation of standard tap water 2 6 Preparation of standard tap
11、 water .2 7 Reporting test results .2 Annex A (informative) Influence of the conductivity on drainability results for different pulps 3 Bibliography6 BS ISO 14436:2010ISO 14436:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide fed
12、eration 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 comm
13、ittee. 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 accorda
14、nce 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
15、 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 14436 was prepared by Technical C
16、ommittee ISO/TC 6, Paper, board and pulps, Subcommittee SC 5, Test methods and quality specifications for pulps. BS ISO 14436:2010ISO 14436:2010(E) ISO 2010 All rights reserved vIntroduction It is well known that even small amounts of electrolytes (salts) influence the drainability properties of a p
17、ulp suspension (References 2 and 3 in the Bibliography). The common practice in pulp testing has been to prepare pulp suspensions using distilled water. Since many pulps contain some electrolytes this practice results in salt concentrations in the pulp suspension that vary with the pulp under test.
18、By using water containing a specified amount of electrolytes when preparing the pulp suspension, the influence from salts arriving with the pulp is greatly reduced, see Annex A. By raising the salt concentration to such a level that the electrical conductivity of the pulp suspension exceeds 40 mS/m,
19、 the influence from small variations in salt concentration becomes negligible. For that reason, a standard tap water based on a divalent ion (Mg2+) and having a conductivity exceeding 40 mS/m has been chosen in this International Standard. NOTE The physical properties of pulp are affected by the pre
20、sence and type of cations (Reference 4 in the Bibliography) in standard tap water. It is important to have reliable drainability results, since in the evaluation of pulp quality the physical properties of laboratory sheets are often plotted as a function of drainability (SR or CSF) and are often rep
21、orted at a certain SR value (Schopper Riegler-value) or a certain CSF-value (Canadian Standard Freeness-value). The standard tap water can be used in the disintegration, the beating, and for the measurement of drainability properties. It must, however, be stated in the relevant International Standar
22、d whether the standard tap water described in this International Standard must be used. BS ISO 14436:2010BS ISO 14436:2010INTERNATIONAL STANDARD ISO 14436:2010(E) ISO 2010 All rights reserved 1Pulps Standard tap water for drainability measurements Conductivity 40 mS/m to 150 mS/m 1 Scope This Intern
23、ational Standard describes the specification and preparation of standard tap water, of conductivity between 40 mS/m and 150 mS/m, for drainability measurements. This International Standard is applicable to all kinds of pulps. NOTE ISO 144871describes the specification and preparation of standard dis
24、tilled/deionized water. 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. IS
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