TEXTILES
FASTNESS TESTS
PART E04: COLOR FASTNESS TO PERPIRATION
This part of ISO 105 specifies a test method for determining the color fastness of textiles to the action of acid and alkaline sweat.
The test pieces of the textile in contact with the specified control fabrics are treated in two different solutions containing histidine, drained and placed between two plates, under a determined pressure, in the test apparatus. The specimens and the control fabrics are dried separately. The color degradation of each specimen and the discharge on the control tissue(s) are assessed using gray scales or instrumentally.
To carry out the test, a perspirometer, a balance, a phmeter, DW multi-fiber fabric, a circulating air chamber, an oven, an evaluation chamber for visual inspection and a gray scale are required.
The fabric is tested under reception conditions and only one test piece of dimensions 40x100mm (+/-2) is made. 2 solutions are prepared: Acid ph 5.5 and Alkaline ph 8.0. The bath ratio of the test tubes should be 50: 1 submerged for 30 minutes.
Test pressure 12.5 kPa, oven temperature 37ºC, 4 hours oven time. Drying at a temperature not higher than 60ºC.
The evaluation is carried out individually per solution and for each fiber of the multi-fiber fabric using a gray scale.
