ISO 15700 pdf download

ISO 15700 pdf download.Leather — Tests for colour fastness — Colour fastness to water spotting 1 Scope This International Standard specifies a method for assessing the effect, on leather of all kinds, caused by spotting with water. The method is suitable for assessing the change in physical appearance and the colour change of the leather. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 1 05-A01 :1 994, Textiles — Tests for colour fastness — Part A01 : General principles of testing. ISO 1 05-A02:1 993, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour. ISO 1 05-A05:1 996, Textiles — Tests for colour fastness — Part A05: Instrumental assessment of change in colour for determination of grey scale rating. ISO 3696:1 987, Water for analytical laboratory use — Specification and test methods. 3 Principle Two drops of distilled water are placed at separate spots on the leather. After 30 min, any surplus water is removed with filter paper from one of the drops and any physical effects are observed. The other drop is allowed to evaporate overnight and the change in colour of the leather is assessed with the standard grey scale. Since the finish of a patent leather and other plastic coated leathers is impervious to water, an alternative procedure is required in which the water spot are placed on the inside surface of the leather. The general colour fastness testing principles are in accordance with those described in ISO 1 05-A01 , taking into account the differences between textile substrates and leather. 4 Apparatus and materials Ordinary laboratory apparatus and 4.1 Pipette, to deliver water drops of approximately 0,1 5 ml. 4.2 Water, grade 3 as defined in ISO 3696. 4.3 Grey scale for assessing change in colour, in accordance with ISO 1 05-A02. NOTE 1 If a suitable instrumental system is available for measuring the change in colour in accordance with ISO 1 05-A05, this may be used instead of the visual assessment...