BS EN ISO 105-E04 Colour fastness to perspiration
The British Standard (BS) and European Norm (EN), aligned with International Organization for Standardization (ISO) standards, provide a robust framework for quality control in the textile industry. One of these is BS EN ISO 105-E04 which deals specifically with colorfastness to perspiration—a crucial test for ensuring that textiles retain their original colors when exposed to sweat or moisture.
Colorfastness testing, particularly in relation to perspiration, ensures that the dyes used in textile production do not bleed or fade during normal wear and tear. This is essential for maintaining product quality, aesthetic appeal, and customer satisfaction over time. The BS EN ISO 105-E04 standard is widely recognized for its stringent requirements ensuring accurate measurement and consistent results.
The test involves placing a sample fabric in contact with an artificial perspiration solution and then drying it under controlled conditions. After this process, the colorfastness of the textile is evaluated visually or using instrumental methods such as spectrophotometry. This method simulates real-world usage scenarios where fabrics come into contact with sweat during physical activity.
Textiles that fail to meet the specified criteria may lead to premature discoloration and loss of consumer trust. Therefore, conducting this type of testing is not only important for meeting regulatory requirements but also enhances brand reputation by ensuring superior product quality.
For accurate interpretation and application of these standards, it's crucial to understand the entire process from specimen preparation through final analysis. Properly trained personnel using appropriate equipment can ensure reliable outcomes. Compliance with this standard helps manufacturers maintain consistent product quality across different batches and production runs, thereby reducing waste and rework costs.
The importance of colorfastness cannot be overstated in industries reliant on high-quality textiles like apparel manufacturing, home furnishings, and technical fabrics used in sports clothing or medical garments. By adhering to these standards, companies can enhance their competitive advantage by delivering products that meet the highest standards of durability and appearance.
In summary, BS EN ISO 105-E04 is an indispensable tool for textile manufacturers aiming to produce durable, high-quality fabrics resistant to changes caused by perspiration. Its application ensures consistent performance across all stages of production while meeting stringent industry expectations.
Scope and Methodology
| Parameter | Description |
|---|---|
| Test Specimen | A minimum of three square specimens, 50 mm x 50 mm each, cut from the fabric. |
| Perspiration Solution | Mixture of water (94%), sodium chloride (3%) and potassium chloride (3%) prepared according to ISO 12768-1:2015. |
| Test Duration | 4 hours at room temperature, followed by drying for 20 minutes at 98°C ± 2°C. |
| Evaluation Method | Visual evaluation or instrumental measurement using spectrophotometry to compare the color change before and after perspiration exposure. |
Quality and Reliability Assurance
- Use of calibrated instruments: Ensure precision in measurements.
- Standardized procedures: Consistency in test conditions ensures reliable results.
- Trained personnel: Knowledgeable staff perform accurate evaluations.
Environmental and Sustainability Contributions
- Reduces waste by ensuring only high-quality textiles reach the market, minimizing consumer returns.
- Promotes longer product life cycles due to enhanced durability of fabrics.
