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ITC3692 Laboratory Report
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Color fastness to perspiration, rubbing, washing, light
Lam Chun Tung 12018881D
Lui Tat Yu 12018897D
Wan Hiu Man 12019841D

Color fastness to perspiration

1.Introduction and Theory This part of ISO 105 specifies a method for determining the resistance of the color of textiles of all kinds and in all forms to the action of human perspiration.

In this test, we have prepared specimens of the textile in contact with adjacent fabrics are treated in two different solutions, drained and placed between two plates under a specified pressure in a test device. The change in color of each specimen and the staining of the adjacent fabrics are assessed by comparison with the grey scales.

2.Materials/Reagents/Apparatus used

2.1 Test devices A frame of stainless steel into which a weight-piece of mass approximately 5kg and base of 60mm x 15mm which is closely fitted. A pressure of 12.5 kPa applied on test specimens measuring 40mm x 100mm placed between glass plates measuring approximately 60mm x 115mmx 1.5mm.

2.2 Oven An oven without an air-circulating fan, maintained at 37°C ± 2°C. 2.3 Alkaline solution It is freshly prepared, containing per litre. 0.5g of L-histidine monohydrochioride monohydrate 5g of sodium chloride

The solution is brought to pH8 with 0.1 mol/l sodium hydroxide solution.

2.3 Acid solution 0.5g of L-histidine monohydrochloride monohydrate 5g of sodium chloride 2.2g of sodium dihydrogen orthophosphate dehydrate

The solution is brought to pH 5.5 with 0.1 mo/l sodium hydroxide solution.

2.4 Adjacent fabrics A multifibre adjacent fabric measuring 4cm x 10cm complying with ISO 105-F10 2.5 Grey scale Grey scale is used for assessing change in

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