ISO INTERNATIONAL STANDARD 8361-3 First edition 1991-09-01 Thermoplastics pipes and fittings -- Water absorption - Part 3: Test conditions for acrylonitrile/butadiene/styrene (ABS) pipes and fittings Tubes et raccords en matieres thermoplastiques -- Absorption d'eau Partie3:Conditionsparticulieres d'essai pour tubes et raccords en acrylonitrile/butadiene/styrene(ABS) Referencenumber iSO 8361-3:1991(E) ISO 8361-3:1991(E) Foreword Iso (the International Organization for Standardization)is a worldwide federation of national standards bodies (IsoO 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. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work.Iso collaborates closely with the.International Electrotechnical Commission(IEC)onall mattersof electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75% of the member bodiescastingavote. International Standardiso8361-3was prepared byTechnical Committee IsO/TC138,Plasticspipes,fittingsandvaivesforthetransportoffluids. Iso 8361 consists of the following parts, under the general title Thermoplasticspipesandfittings-Waterabsorption: Part1:Generaltestmethod Part2:Test conditions for unplasticized poly(vinyl chloride) (PvC-U)pipesandfittings Part 3: Test conditions for acrylonitrile/butadiene/styrene (ABS) pipes and fittings NOTE-Pipes and fittings made of other materials, i.e.chlorinated poyly(vinyl chloride) (PVC-C), high-impact poly(vinyi chloride) (PVC-HI), and acryionitrile/styrene/acrylate (AsA), will be dealt with later in addi- tional parts. Annex Aof this part of iso8361 is for information only. ISO1991 or by anymeans,electronicor mechanical, including photocopying and microfitm, without permission in writing from the publisher. InternationalOrganizationforStandardization CasePostale56CH-1211Geneve20Switzerland Printed in Switzerland 1SO 8361-3:1991(E) INTERNATIONAL STANDARD Thermoplastics pipes and fittings - Water absorption -- Part 3: Test conditions for acrylonitrile/butadiene/styrene (ABS) pipes and fittings acrylonitrile/butadiene/styrene(ABS) General Scope specification for moulding and extrusion materials. Thispartof iso8361 specifies thetestconditions for Iso8361-1:1991,Thermoplasticspipesandfittings determiningthe water absorption of acrylonitrile/ Water absorption -- Part 1: General test method. butadiene/styrene (ABS)pipes and fittings,what- ever their applications and use, which contain only the necessary antioxidants and stabilizers together 3 Principle with any necessary pigments. Test pieces are first conditioned and their mass and NOTE1 The general test method for the determination total surface area determined. of thewater absorption of thermoplasticspipes and fit- tings is given in iso 8361-1. The conditioned test pieces are then immersed for 24 h in distilled water 90 °C. ThispartofIso8361alsogives,forinformation purposes,the preferred maximum value of the water The mass of each test piece is determined again, and the change in mass per unit area calculated. absorption. The water absorption values appropriate forthe in- Requirements on materials tended applications of particularABs pipes and fit- 4 tings are specified in the relevant product standards. Materials forABSpipes and fittings shall satisfythe requirementsofiso7245. Normative references 5 Procedure 2 The following standards contain provisions which, 5.1Measure the dimensions of thetestpieces in through reference in this text, constitute provisions accordancewith7.1ofIsO8361-1:1991. of this part of IsO 8361.At the time of publication, the editions indicated were valid.