EUROPEANSTANDARD EN IS0 4098 NORME EUROPEENNE EUROPAISCHE NORM July 2018 ICS 59.140.30 Supersedes ENIS0 4098:2006 English Version Leather -Chemical tests - Determination of water-soluble matter, water-solubleinorganic matter and water-soluble organic matter (IS0 4098:2018) Cuir - Essais chimiques - Dosage des matieres Leder-Chemische Prifungen -Bestimmung solubles dans I'eau, des matieres inorganiques wasserloslicher Substanzen,wasserloslicher solubles dans I'eau et des matieres organiques anorganischer Substanzen und wasserloslicher solubles dans I'eau (IS0 4098:2018) organischer Substanzen (Is0 4098:2018) This European Standard was approved by CEN on 23March 2018. 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 ortoany CEN member. This European Standard exists in three official versions (English,French, German).A version in any other language Management Centre has the same status as the official versions. 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 COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018CEN All rights of exploitation in any form and by any means reserved Ref. No. EN IS0 4098:2018: E worldwide for CEN national Members European foreword Thisdocument (ENIS0 4098:2018)has been prepared byTechnical Committee IULTCS"International Union of Leather Technologists and Chemists Societies" in collaboration with Technical Committee CEN/TC 289"Leather"the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical textor by endorsement,atthelatestby January 2019,and conflictingnational standardsshall be withdrawn at thelatest by January2019. Attention isdrawntothepossibilitythatsome ofthe elementsof this documentmaybethe subject of patent rights. CEN shall not be held responsiblefor identifying any or all such patentrights. This document supersedes EN IS0 4098:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the followingcountriesareboundtoimplementthis 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. Endorsementnotice ThetextofIS04098:2018hasbeenapprovedbyCENasENIS04098:2018withoutanymodification. ii Contents Page Foreword iv 1 Scope .1 2 Normativereferences. .1 3 Terms and definitions .1 4 Principle .2 5 Reagents. .2 6 Apparatus. .2 7 Sampling and preparation of samples .3 8 Procedure. .3 8.1 General. 3 8.2 Water-solublematter 3 8.3 Water-soluble inorganic matter 3 9 Remarks on theprocedure .3 10 Calculation and expression of results 4 11 Test report. 4 12 Repeatability 5 @ IS0 2018 - All rights reserved iii