WebMay 1, 2024 · This document specifies a method for determining the pH value and the difference figure of an aqueous leather extract. It is applicable to all types of leather. This International Standard specifies a method for determining the pH value and the difference … WebLEATHER NATURAL LEATHER ARTIFICIAL LEATHER Resistance to tear (kg/cm) Min. 30 Min. 20 Colorfastness to rubbing dry & wet Dry: Min. 4 Wet: Min. 3 Min. 3 Ash test 2.5% Max. Colorfastness to perspiration Min. 3 Moisture content 18% Max Colorfastness to light Min. 6 Min. 4 Resistance to flexing 30,000 flexions pH 3.5 Min. PCP (mg/kg) Free -
ISO - ISO 4045:2024 - Leather — Chemical tests
WebVegetable-tanned bend outer sole leather — Specification 1 Scope This draft Uganda standard specifies requirements, sampling and methods of test for vegetable-tanned bend ... When the leather is tested: a) the pH value shall be between 3.3 and 3.5 in accordance with clause 5.4 b) the water-soluble matter content, calculated on a moisture-free ... Webyears,theamountofsulphuricacidadded,andtheoriginalpHvalue oftheleatherbeforeaging.Thestorageconditions,unlessotherwise notedonthegraphs,wereconstantat65percentrelativehumidity … hideout\u0027s gw
Leather Standards - Standards Products - Standards
WebIn order to obtain a definite pH value the reference electrode must have a defined stable potential which is independent of the measured solution. Every reference electrode consists of a reference element which is immersed in a defined electrolyte. This electrolyte must … WebThen the pI (the pH value at the zero point of zeta potential) of a variety of chrome-free tanned leathers, such as mineral, vegetable, organic and combination tanned leather, were obtained by ... WebE-ssentials 10 - 2024 ISO 4045:2024: Testing standard of pH value in leather is now published CONSUMER PRODUCTS AND RETAIL E-SSENTIALS Your regular update for technical and industry information // CONTACT us Subscribe for Updates ISO 4045:2024: … hideout\u0027s h2