Video tutorial

This three-part video series explores the critical issue of bisphenols (such as Bisphenol S and F) in the leather industry. Follow our experts inside the GSC analytical laboratory to discover our complete testing workflow—from sample preparation and ultrasonic extraction to advanced HPLC analysis and precise quantification. Discover how our continuous research and reliable testing methods help tanneries and brands monitor bisphenol levels, ensuring safety, compliance with ECHA regulations, and high-performance products with a lower environmental impact.

This three-part video series explores the Fogging Test, one of the most important quality checks for leather used in the automotive sector. Learn how we measure the volatile substances emitted from car interiors that can deposit on windows. We will guide you through the preparation and execution of the highly reliable gravimetric method, showing you exactly how GSC performs the test according to ISO standards—complete with practical examples of materials that meet and fail the requirements.

This five-part series covers the Veslic Test, a fundamental procedure for evaluating the colour fastness and rubbing resistance of leather across the automotive, footwear, leather goods, and upholstery sectors. Follow our experts through the entire testing process: from the critical phase of accurate sample taking and preparation with certified materials, to the mechanical operation of the Veslic machine. Finally, discover how we objectively evaluate finish cracking, colour fading, and felt staining using standardized grey scales to ensure the highest quality and prevent any production complications.