ISO 105-E04

Chemical Interaction

Specimens of the textile are wetted out with the test solution and placed between acrylic plates under a defined mechanical pressure. This assembly is heated in an oven to body temperature to allow the simulated sweat to interact with the dyestuff. The conditions of the ISO 105-E04 test promote the migration of unfixed dye from the specimen to adjacent multi-fiber fabrics.

Result Evaluation

Staining and color change are assessed against standard grey scales to assign a rating from one to five. A low rating in the ISO 105-E04 test suggests that the garment will bleed onto undergarments or adjacent light panels during wear. This evaluation is critical for sportswear designs featuring high contrast color blocks.

Industry Compliance

Retailers require minimum ratings before accepting bulk fabric shipments from mills. Passing this test prevents consumer returns of discolored garments. This standard holds producers accountable.