Analytical Testing Standard
Technical protocols defined by the European Committee for Standardization specify the methods for determining the presence of certain perfluorinated and polyfluorinated substances in textile materials. The en 17681 standard provides a framework for liquid chromatography and mass spectrometry analysis to identify these chemicals at very low concentrations. It is divided into multiple parts to address different classes of compounds and extraction techniques.
The scope includes both finished garments and the raw fabrics used in their construction.
Chemical Identification
Laboratory technicians follow the procedures to extract substances from the fabric using specific organic solvents. These solvents are then analyzed to detect regulated molecules that are often used for water and oil repellency. Because en 17681 focuses on specific chain lengths and chemical structures, it allows for a precise mapping of the chemical profile of a textile finish.
Compliance Verification
Brands use the results from this test to ensure that their products meet the requirements of the reach regulation and other environmental safety mandates. The standard sets out the preparation of the test specimen and the calibration of the analytical equipment to ensure results are repeatable across different laboratories. Any detection above the established threshold results in a failure for the specific batch.
Reporting Requirement
Documentation produced after the testing must state the exact concentrations found for each of the target compounds. This data is essential for the technical file of the garment and provides evidence of due diligence in chemical management. Correct application of en 17681 ensures that the supply chain remains free of restricted fluorinated substances.
