SVENSK STANDARD SS-EN ISO 15700
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Standardiseringsgruppen STG 2000-03-24 1 1 (1+8)
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ICS 59.140.30
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Leather – Tests for colour fast- ness – Colour fastness to water spotting (ISO 15700:1998)
The European Standard EN ISO 15700:1999 has the status of a Swedish Standard. This docu- ment contains the official English version of EN ISO 15700:1999.
Swedish Standards corresponding to documents referred to in this Standard are listed in ”Catalogue of Swedish Standards”, issued by SIS. The Cata- logue lists, with reference number and year of Swedish approval, International and European Standards approved as Swedish Standards as well as other Swedish Standards.
Läder – Provningar för färghärdig- het – Färghärdighet mot vatten- fläckning (ISO 15700:1998)
Europastandarden EN ISO 15700:1999 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN ISO 15700:1999.
Motsvarigheten och aktualiteten i svensk standard till de publikationer som omnämns i denna stan- dard framgår av ”Katalog över svensk standard”, som ges ut av SIS. I katalogen redovisas interna- tionella och europeiska standarder som fastställts som svenska standarder och övriga gällande svenska standarder.
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 15700
August 1999
ICS 59.140.30
English version
Leather - Tests for colour fastness - Colour fastness to water spotting (ISO 15700:1998)
Cuir - Essais de solidité des teintures - Solidité des teintures à la goutte d'eau (ISO 15700:1998)
Leder - Farbechtheitsprüfungen - Bestimmung der Wassertropfenechtheit von Färbungen (ISO 15700:1998)
This European Standard was approved by CEN on 23 July 1999.
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 Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T É E U R O P É E N D E N O R M A L I S A T I O N E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G
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© 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
Ref. No. EN ISO 15700:1999 E
Page 2
EN ISO 15700:1999
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Page 3 EN ISO 15700:1999
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 105-A01:1994, Textiles — Tests for colour fastness — Part A01: General principles of testing.
ISO 105-A02:1993, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour.
ISO 105-A05:1996, Textiles — Tests for colour fastness — Part A05: Instrumental assessment of change in colour for determination of grey scale rating.
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods.
Page 4
EN ISO 15700:1999
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 105-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 0,15 ml.
4.2 Water, grade 3 as defined in ISO 3696.
4.3 Grey scale for assessing change in colour, in accordance with ISO 105-A02.
NOTE 1 If a suitable instrumental system is available for measuring the change in colour in accordance with ISO 105-A05, this may be used instead of the visual assessment method.
5 Test specimen
Take a specimen of leather, at least 100 mm x 50 mm in size, which is representative of the piece of leather available for testing.
6 Procedure (for patent leathers, see clause 7)
6.1 Place the specimen on a flat surface with the surface to be tested uppermost. Normally this will be the side corresponding to the outside of the leather article to be produced from the piece of leather.
6.2 With the pipette (4.1) place two drops (each approximately 0,15 ml) of water (4.2) approximately 50 mm apart on the surface of the specimen.
6.3 After 30 min remove the residual water (if any) from one spot by gently blotting with filter paper and note any physical effects the water has had on the leather.
NOTE 2 The physical effects which may be observed include swelling and loss of lustre. To detect these, it may be necessary to observe the leather from all directions.
Describe the severity of the effect using one of the following terms: slight, moderate, or severe.
