BS EN ISO 105-G01:2016 pdf free.Textiles一1 Tests for color fastness Part G01: Colours fastness to nitrogen oxide (ISO 105-G01:2016)
This part of Iso 105 specifies two methods for determining the resistance of the colour of textiles of all kinds and in all forms to the action of nitrogen oxides produced during combustion of gas, coal, oil. etc., and when air is passed over heated filaments.
The two tests differ in severity; one or both of them are used, depending on the result obtained (Z2A).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO I 05-A02, Textiles — Tests for colourfastness — Part A02: Grey scale for assessing change in colour
ISO 105- F02, Textiles — Tests for colour fastness — Part F02: Specification for cotton and viscose ad] acent fabrics
ISO 139, Textiles — Standard atmospheres for conditioning and testing
ISO 3696, Water for analytical laboratory use — Specification and test methods
3 Principle
Specimens of textiles are exposed to nitrogen oxides in a closed container until either one or three test-control fabrics exposed simultaneously with the test specimens have changed in colour to a predetermined extent. The change in colour of each specimen is assessed with the grey scale.
4.6 Urea solution, containing 10 g/l of urea (NH2CONH2), buffered to pH 7 by the addition of 0,4 g/l of sodium dihydrogen orthophosphate dihydrate (NaH2PO4.2H20) and 2,5 g/l of disodium hydrogen orthophosphate dodecahydrate (Na2HPO4•12H20), and containing 0,1 g/l or less of a rapid-wetting surface-active agent, for example, sodium dioctyl sulfosuccinate.
4.7 Test-control fabric
4.7.1 Test-control fabric dyed with Disperse Violet I
A woven filament acetate is uniformly dyed in an open-width dyeing machine with 0.4 % (on mass of fabric) Cl Disperse Violet 1 (Colour Index, Third Edition) in a dye-bath containing 1 g/l of a dispersing agent at a liquor ratio of 10:1.
The fabric construction has both a taffeta and a satin side; for this test procedure, only the taffeta side will be considered.
The resistance of the test-control fabric to the action of nitric oxide should not be varied between the new lots. The supplier should confirm the performance of the new lot.’)
4.7.2 Test-control fabric dyed with Disperse Blue 56
A woven filament acetate is uniformly dyed in an open-width dyeing machine with 0,8 % (on mass of fabric) CI Disperse Blue 56 (Colour Index, Third Edition) in a dye-bath containing 0,5 mI/I of a dispersing agent at a liquor ratio of 42:1.
The fabric construction has both a taffeta and a satin side; for this test procedure, only the taffeta side will be considered.
The resistance of the test-control fabric to the action of nitric oxide should not be varied between the new lots. The supplier should confirm the performance of the new lot.2)
4.8 Standard of fading
4.8.1 Standard fading fabric for test-control fabric dyed with Disperse Violet 1
The regenerated cellulose woven taffeta is a fabric of similar appearance to the test-control fabric (4.7.1.), dyed to match an average of faded test-control fabric..3)
4.8.2 Standard of fading for test-control fabric dyed with Disperse Blue 56
It is considered that the standard of fading is completed when a faded test-control fabric (4.72) is observed to have a contrast equal to grade 3-4 on the grey scale.BS EN ISO 105-G01 pdf download.
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