Desorption Kinetics of Hydrolyzed Reactive Dyes in Continuous Wash Ranges
Continuous wash ranges clear hydrolyzed reactive dye by maximizing thermal diffusion and maintaining steep counter-current concentration gradients across wash stages.
ISO 105 C06 C2S
Testing Protocol
Standardized tests for color fastness to domestic and commercial laundering define the resistance of dyed textiles to various washing conditions. The iso 105 c06 c2s method involves a wash at sixty degrees celsius with perborate for thirty minutes using steel balls for mechanical action. This specific sub test simulates multiple domestic washes in a single cycle.
It assesses both the color change of the specimen and the staining of adjacent multifiber fabric.
Simulation Method
Mechanical agitation in a rotating container reproduces the abrasive forces found in home washing machines. The iso 105 c06 c2s procedure uses ten steel balls to increase the physical impact on the textile. This ensures that the test captures the loss of dye due to both chemical action and surface friction.
Results are graded using grey scales for color change and staining.
Chemical Composition
Chemical formulations for this test include specific concentrations of sodium perborate to mimic oxidizing bleach. The iso 105 c06 c2s protocol requires precise pH control to maintain repeatable results across different laboratories.
Performance Standard
Retailers use this grade to determine if a garment is suitable for a machine wash label. An iso 105 c06 c2s rating of four or higher usually meets the requirements for high street apparel.