ISO INTERNATIONAL STANDARD 9957-1 Firstedition 1992-10-15 Fluid draughtingmedia - Part 1: Water-based India ink -- Requirements and test conditions Fluidesadessin Partie 1: Encres de Chine aqueuses -Prescriptions et conditions d'essai Referencenumber ISO 9957-1:1992(E) ISO 9957-1:1992(E) Foreword Iso (the International Organization for Standardization)is a worldwide federationof national standards bodies (IsO memberbodies).Thework ofpreparingInternational Standards isnormallycarriedoutthroughIsO technicalcommittees.Eachmemberbodyinterestedinasubjectfor whichatechnicalcommitteehasbeenestablishedhastherighttobe represented on that committee.International organizations,govern- mental and non-governmental, in liaison with iso, also takepart in the work.Isocollaborates closelywiththeInternationalElectrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft international Standards adopted by thetechnical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at ieast 75% of the member bodies casting a vote. international Standardiso9957-1waspreparedbyTechnicalCommittee Iso/Tc10,Technicaldrawings,productdefinitionandrelateddocumen- tation,Sub-CommitteeSC9,Mediaandequipmentfordrawingandre- lated documentation. Iso 9957 consists of the following parts,under the general title Fluid draughtingmedia: Part 1:Water-based India ink for tracing paper -Requirements andtestconditions Part 2:Water-based non-India ink for tracing paper --Require- ments andtest conditions AnnexAof thispart of iso9957 is for informationonly. ISO 1992 All rights reserved. No part of this publication may be reproduced or utilized in any form orbyanymeans,electronic ormechanical, including photocopyingandmicrofilm,without permission in writing from the publlsher. International Organizationfor Standardization Case Postale 56.CH-1211Geneve 20·Switzerland Printed in Switzeriand i ISO 9957-1:1992(E) INTERNATIONALSTANDARD Fluid draughting media - Part 1: Water-based India ink --- Requirements and test conditions Iso9175-2:1988,Tubulartipsforhand-heldtechnical 1 Scope pens using india ink on tracingpaper-Part 2:Per- formance,testparametersandtestconditions. This partofIso9957 specifies the requirements and test conditions for water-based India ink intended for Iso9177-2:1989,Mechanicalpencils--Part2:Black use indrawing instruments conforming to iso 9175-1used on natural tracing paper conforming leads-Classification anddimensions. ISO9961, to provide biack line technical ISO9961:1992, Draughting media for technical drawings1), drawings-Natural tracingpaper. 2 Normative references iso10209-1:1992,Technicalproduct documentation --Vocabulary-Part1:Terms relatingtotechnical The following standards contain provisions which, drawings: general and types of drawings. throughreferenceinthistext,constituteprovisions of this part of IsO 9957.At the time of publication, the editions indicated were valid. All standards are 3 Definitions subjectto revision,and partiesto agreements based on this part of iso 9957 are encouraged to investi- For the purposes of this part of iso 9957,the defi- gate the possibility of applying the most recent edi- nitions given in IsO 9175-1 and the following defi- tions ofthe standards indicated below.Members of nition apply. IEC and ISO maintain registers of currently valid In- ternationalStandards 3.1 India ink; China ink:A water-based drawing iso5-2:1991,Photography-Densitymeasurements fluid that contains dispersed carbon black as its pri- Part 2: Geometricconditions sfortransmission marycolorant. density. Iso5-4:1983,Photography-Densitymeasurements 4 Requirements Part 4: Geometricconditions forreflection density. Drawings made with India ink shall be reproducible using conventional reproduction techniques (blue- Iso554:1976,Standardatmospheresforconditioning print, microfilming photography,electrostatics, etc.) and/ortesting-Specitications. assuming that repro