Standardized Testing
International standards define the gas chromatography method for quantifying dimethylformamide in footwear and apparel materials. The protocol known as en iso 16189 provides a harmonized way for laboratories to detect this restricted solvent in plastics, synthetic leathers and coated fabrics. It establishes the extraction parameters and calibration requirements needed for global compliance.
Scope Application
Testing applies to all parts of a finished product that might contain solvent residues from the production process. Under the rules of en iso 16189, samples are typically extracted with methanol at high temperatures to ensure the release of the analyte. This process covers materials ranging from polyurethane soles to the adhesive layers of a garment.
Analytical Procedure
Measurement occurs using a gas chromatograph equipped with either a mass spectrometer or a flame ionization detector. The standard en iso 16189 requires the use of an internal standard to correct for any losses during the preparation stages. Results are reported in milligrams per kilogram to determine if the product meets the safety limits set by brands or regional regulations.
Strict adherence to the oven temperature program and column selection is necessary to avoid interference from other volatile organic compounds found in textile manufacturing.
Compliance Checkpoint
Retailers use these test reports to verify that their supply chain follows the chemical restrictions for hazardous substances. A failure to meet the requirements of en iso 16189 can result in the rejection of an entire production lot. Reliable data protects consumers from exposure to harmful solvents.
