EN IS0 787-17 EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHE NORM May2019 ICS 87.060.10 Supersedes ENIS0 787-17:2017 English Version General methods of test for pigments and extenders - Part 17: Comparison of lightening power of white pigments (IS0 787-17:2019) Methodes generales d'essai des pigments et matieres Allgemeine Pruifverfahren fur Pigmente und Fullstoffe de charge - Partie 17: Comparaison du pouvoir Teil 17: Vergleich des Aufhellvermogens von éclaircissant des pigments blancs (Is0 787-17:2019) Weifspigmenten (IS0 787-17:2019) This European Standard was approved by CEN on 12 April 2019. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by Centre has the same status as the officialversions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITEEUROPEENDENORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @2019CEN All rights of exploitation in any form and by any means reserved Ref.No.EN ISO 787-17:2019 E worldwide for CEN national Members ENIS0787-17:2019 (E) European foreword This document (ENIS0787-17:2019)has been prepared byTechnical Committee IS0/TC 256 "Pigments,dyestuffs and extenders"in collaboration with Technical Committee CEN/TC 298"Pigments and extenders" the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2019, and conflicting national standards shall be withdrawn at thelatestby November 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN IS0 787-17:2017. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of IS0787-17:2019 has been approved by CEN as ENIS0787-17:2019 without any modification. 3 Contents Page Foreword iv 1 Scope 2 Normativereferences. .1 3 Terms and definitions .1 4 Reagent. .1 5 Apparatus. .2 6 Sampling. .2 7 Procedure. .2 7.1 Procedure A 2 7.1.1 Incorporationof thewhitepigmentintothebluepastebymeansofthe automatic muller 2 7.1.2 Incorporationofthewhitepigmentintothebluepastebymeans ofa hand muller or paletteknife 2 7.1.3 Procedureforthecomparison 7.2 ProcedureB 3 7.2.1 Incorporation of the whitepigment into the blue paste bymeans of the automatic muller 3 7.2.2 Incorporationof thewhitepigmentintothebluepastebymeans ofa hand muller or palette knife 4 7.2.3 Procedureforthecomparison 4 8 Expressionofresults 5 8.1 Procedure A 5 8.2 Procedure B 5 9 Test report. 5 @ IS0 2019 - All rights reserved