EN 16711 1

Chemical Methodology

Technicians crush the fabric into small pieces to ensure full contact between the specimen and the solvent mixture. Nitric acid and hydrogen peroxide break down the organic matrix of the textile, releasing heavy metals into the resulting aqueous phase. This liquid solution undergoes filtration before the final quantification of specific metal mass fractions occurs within the measurement instrument.

The protocol provides a uniform baseline for testing accessories like metal buttons, zippers, and decorative sequins.

Laboratory Compliance

Compliance with this protocol ensures that production batches meet legal safety thresholds established for restricted chemicals in clothing. Brands request these test results to verify that their supply chain partners manage dye and finishing chemistry without leaving heavy metal residues on the final product. Reliable findings depend on the homogeneity of the sample and the removal of surface contaminants that might distort the final mass readings.

Traceability Limits

Regulatory bodies accept this quantification as the formal proof of conformity for finished goods sold across international borders. The standard applies to materials containing natural or synthetic fibres but excludes certain high-density alloys that require different dissolution techniques. Consistent application of the digestion parameters reduces the likelihood of false negatives during routine quality control inspections.

Every certified test result anchors the liability of the producer regarding chemical safety legislation.