1、BRITISH STANDARD BS ISO 14487:1997 Pulps Standard water for physical testing ICS 85.040BSISO14487:1997 This BritishStandard, having been prepared under the directionof the Sector Board forMaterials and Chemicals, waspublished under the authorityof the Standards Boardand comes intoeffecton 15Septembe
2、r1997 BSI 03-2000 ISBN 0 580 28061 6 National foreword This BritishStandard reproduces verbatim ISO14487:1997 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PAI/11, Methods of test for paper, board and pulp, which has the r
3、esponsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK.
4、 A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The BritishStandards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Intern
5、ational Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a B
6、ritish Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theISO title page, pagesii toiv, page1 and a back cover. This standard has been updated (see copyright date) and may have had amendm
7、ents incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSISO14487:1997 BSI 03-2000 i Contents Page National foreword Inside front cover Foreword iii Text of ISO 14487 1ii blankBSISO14487:1997 ii BSI 03-200
8、0 Contents Page Foreword iii Introduction 1 1 Scope 1 2 Conformance 1 3 Definition 1 4 Testing 1 4.1 Apparatus 1 4.2 Procedure 1 5 Preparation 1 6 Storage 1 7 Test report 1 Descriptors: Paper pulps, tests, physical tests, test fluids, water.BSISO14487:1997 BSI 03-2000 iii Foreword ISO (the Internati
9、onal 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 interested in a subject for which a technical committee has been
10、 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 Commission (IEC) on all matters of electrotechnical standa
11、rdization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an InternationalStandard requires approval by at least75% of the member bodies casting a vote. International Standard ISO14487 was prepared by Technical Committ
12、ee ISO/TC6, Paper, board and pulps, Subcommittee SC5, Test methods and quality specifications for pulp.iv blankBSISO14487:1997 BSI 03-2000 1 Introduction The concentration of electrolytes (salts) in a pulp suspension influences the drainability properties considerably. It is therefore important that
13、 the water used for certain tests conforms to given requirements concerning its electrolyte content. NOTE 1Even low concentrations of electrolytes greatly affect drainability properties. NOTE 2Pulps normally contain electrolytes. This raises the salt concentration in the pulp suspension and increase
14、s drainability. 1 Scope This International Standard specifies the requirements for standard water intended for preparing pulp suspensions to be used in tests where drainability properties are of importance, including laboratory beating. It is applicable to all kinds of pulp. 2 Conformance The confor
15、mance of the water shall be controlled in accordance with clause4. 3 Definition For the purposes of this International Standard, the following definition applies. 3.1 standard water water purified to electrical conductivityu 0,25mS/m at25 C 4 Testing 4.1 Apparatus 4.1.1 Ordinary laboratory glassware
16、 4.1.2 Conductivity meter, capable of indicating the conductivity of water with an error of less than5% at a conductivity of around0,25mS/m. 4.2 Procedure Transfer100ml of the standard water into a beaker and adjust its temperature to25 C 1 C. Measure the conductivity using the conductivity meter in
17、 accordance with the manufacturers operating instructions. 5 Preparation Prepare the standard water by distillation, ion exchange, reverse osmosis or other suitable method. 6 Storage Contamination of water during storage may arise principally from dissolution of soluble constituents from glass or pl
18、astic containers or absorption of atmospheric carbon dioxide and any impurities present in the laboratory atmosphere. For this reason, standard water shall be protected from atmospheric contamination and from dissolution from container and tubing materials. It shall be stored in suitable inert, clea
19、n, airtight, full containers which have been thoroughly rinsed with water of similar grade. 7 Test report Test results obtained from pulp suspensions in standard water, or from laboratory sheets prepared from such suspensions, shall be given in a test report, stating clearly that the water used was
20、standard water according to this International Standard.BS ISO 14487:1997 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international l
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