The “S” in the ISO 105 C06 test number refers to a single commercial or domestic laundering. There are 16 different ISO 105 C06 test procedures, ranging from A1S to E2S. The two main standards for detergent washing are ISO 105 C06 and AATCC 61.Īim for a color change rating of 4 and a color staining rating of 3 to 5 for detergent washing. A textile item must withstand repeated washing throughout its lifecycle without losing its color properties or staining other articles its washed with.ĭetergent washing testing determines the resistance of textile colors to domestic or commercial laundering procedures. Color fastness to detergent washing testĬolor fastness during washing is one of textile importers’ main concerns. The Grey Scale for Staining rates the staining of an undyed material tested with the specimen from 1 (greatest color transfer) to 5 (no color transfer). The Grey Scale for Color Change rates the color fading of the specimen on a scale from 1 (greatest change) to 5 (no change). and EU, respectively.įor most ISO and AATCC color fastness tests, the fabric specimen’s color after testing is compared to a “Grey Scale for Color Change” and a “Grey Scale for Staining”. The American Association of Textile Chemists and Colorists (AATCC) and the International Organization for Standardization (ISO) color fastness standards are the most commonly used in the U.S. Since color fastness standards are not a legal requirement, importers can typically test their products to whatever standard they feel is most appropriate for their target market. Professional laboratories typically conduct product testing according to international standards for your target market. How professional laboratories evaluate color fastness QC inspectors can conduct some color fastness testing at a supplier’s facility before shipping, such as washing or crocking testing ( related: 5 On-Site Product Tests for Garment Inspection).īut a professional lab can test your fabric under many conditions that an inspector can’t replicate on site, such as elevated humidity levels, continuous sunlight and heavy perspiration.Īsking your inspector or supplier to send samples of your textiles to a laboratory for further testing can offer added assurance of your product’s color resilience. Worse still, the customer will lose confidence in your brand if they perceive poor performance and durability in your products. But color fastness testing is essential to ensuring customer satisfaction with fabric products.Ĭolor fastness issues will often prompt consumers to reject the product and return it or submit a claim. Unlike other types of fabric testing, such as flammability, there are no mandatory legal requirements for color fastness testing. Any number of activities associated with regular use can reveal these issues, including: Poor color fastness can cause fabric shade variation or the staining of other products. Some dyes are also water soluble, while other are insoluble. Dye type: The larger the dye molecule is, the easier it will attach to the fiber.A cellulosic fiber and a vat dye together have good resistance to fading, for instance, while polyesters perform well with substantive dyes. Fiber type: Fibers must be compatible with their chosen dye.Why textile importers should conduct color fastness testingĬolor fastness is the resistance of a fabric to change in its color characteristics or to transfer its colorant(s) to adjacent materials. We’ll help you get started by introducing five of the most common color fastness tests in this article. A laboratory can help you choose which tests are most important for your fabric type and target market. Many international color fastness testing standards exist to help importers evaluate the durability of their dyed fabrics. Color fastness testing in a third-party laboratory can help you ensure your fabric’s colors stay fresh and vibrant after many uses. The best way to ensure your fabric’s color can withstand regular use is to test it in different conditions before shipment. But how can you ensure the textiles you manufacture keep their color over time? Have you ever ignored the “wash with like colors” label on your clothes only to have your red shirt stain all your white towels? Or have you ever hung a beach towel out to dry only to find its bright blue color faded to a baby blue by the next morning?Ĭonsumers don’t like their textiles to change colors or bleed during washing, under the sun or anywhere else. Here are five of the most common color fastness tests that a third-party laboratory can conduct to maintain your fabric's color. Consumers don’t like their textiles to change colors or bleed during washing, under the sun or anywhere else.
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