Oeko-Tex's Eco Passport certification has been recognised as a Level 3 accepted certifier for MRSL conformance in the Zero Discharge of Hazardous Chemicals (ZDHC) Gateway chemical module.

Conformance Level 3, the highest level in the ZDHC organisation's Manufacturing Restricted Substances List (ZDHC MRSL), indicates that Eco Passport certified chemical substances meet the ZDHC's guidelines for safer textile chemistries that are also verified as being responsibly manufactured.

The ZDHC MRSL covers chemical substances that are limited or banned from intentional use in the production of apparel and footwear materials and trims in order to protect workers, consumers, and the environment. 

"Eco Passport by Oeko-Tex is designed to address the specific challenges chemical manufacturers face in their efforts to comply with sustainability initiatives while still protecting the confidentiality of their formulations. Recognition as a Level 3 indicator permits Eco Passport certified suppliers to adhere to the strictest ZDHC requirements while safeguarding their intellectual property," says John Frazier, senior technical director for Oeko-Tex in North America.

The programme analyses a broad set of chemicals including colourants, scouring agents, adhesives, inks, pigments, and auxiliaries in a confidential, three-step process that confirms that the formulations and individual ingredients (CAS level chemicals) meet specific criteria for sustainability, safety, and regulatory compliance.

Chemical formulations are checked against the comprehensive Oeko-Tex list of substances of concern and then verified by laboratory evaluation to ensure that they do not contain unsafe contaminants. Sustainable production is verified with on-site visits of the manufacturer's occupational safety methods, water and air protection mechanisms, and quality control practices in line with STeP by Oeko-Tex guidelines for sustainable production facilities.

Formulations that are Eco Passport certified are eligible to be listed on the ZDHC Gateway – Chemical Module and the Oeko-Tex Buying Guide so that they are easily identified by apparel and footwear manufacturers shopping for sustainable chemistries.