ISO INTERNATIONAL STANDARD 9957-1 First edition 1992-10-15 Fluid draughting media Part 1: Water-based India ink - Requirements and test conditions Fluides a dessin Partie 1: Encres de Chine aqueuses - Prescriptions et conditions d'essai Reference number ISO 9957-1:1992(E) ISO 9957-1:1992(E) Foreword iso (the International Organization for Standardization) is a worldwide federation of nationai 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 committee. Internationai organizations, govern- mental and non-governmentai, 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. Draft International Standards adopted by the technical committees are circutated to the member bodies for voting. Publication as an Inter- bodies casting a vote. International Standard isO 9957-1 was prepared by Technical Committee iso/TC 10, Technical drawings, product definition and related documen- tation, Sub-Committee SC 9, Media and equipment for drawing and re- lated documentation. Iso 9957 consists of the following parts, under the general title Fluid draughting media Part 1: Water-based India ink for tracing paper - Requirements and test conditions Part 2: Water-based non-India ink for tracing paper -- Require- ments and test conditions Annex A of this part of IsO 9957 is for information only. ISO1992 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, inciuding photocopying and microfim, without permission in writing from the publisher. International Organization for Standardization Case Postale 56·CH-1211Geneve 20·Switzerland Printed in Switzerland ii ISO 9957-1:1992(E) INTERNATIONAL STANDARD Fluid draughting media Part 1: Water-based India ink -- Requirements and test conditions iso 9175-2:1988, Tubular tips for hand-held technical Scope pens using India ink on tracing paper -- - Part 2: Per. This part of iso 9957 specifies the requirements and formance, test parameters and test conditions. test conditions for water-based India ink intended for isO 9177-2:1989, Mechanical pencils - Part 2: Black drawing use instruments conforming to leads -- Classification and dimensions. Iso g175-1 used on natural tracing paper conforming toISO 9961, to provide black line technical Iso 9961:1992, Draughting media for technical drawingst) drawings -- Natural tracing paper. Normative references IsO 10209-1:1992, Technical product documentation Vocabulary - Part 1: Terms relating to technical The following standards contain provisions which, drawings: general and types of drawings. through reference in this text, constitute provisions of this part of IsO 9957. At the time of publication the editions indicated were valid. All standards are Definitions 3 subject to revision, and parties to 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 of the standards indicated below. Members of nition apply. IEC and ISO maintain registers of currently valid in- ternationai Standards. 3.1 India ink; China ink: A water-based drawing iso 5-2:1991, Photography -- Density measurements fluid that contains dispersed carbon black as its pri- Part 2: Geometric conditions for transmission mary colorant. density. Iso 5-4:1983, Photography -- Density measurements Requirements Part 4: Geometric conditions for reflection density. Drawings made with india ink shall be reproducible using conventional reproduction techniques (blue- Iso 554:1976, Standard atmospheres for conditioning print