The Global Recycled Standard (GRS) has become one of the most requested certifications across the textile, apparel, and recycled-materials supply chain. Brands such as H&M, Zara, and Uniqlo increasingly require their suppliers to prove recycled content with a credible third-party certificate. This guide walks you through exactly how GRS certification works, what your facility must meet, and the step-by-step process to get certified.
What Is GRS Certification?
GRS (Global Recycled Standard) is an international, voluntary, full product standard that sets requirements for third-party certification of recycled content, chain of custody, social and environmental practices, and chemical restrictions. It is owned and managed by Textile Exchange, a global non-profit organization. The standard uses the ISO 14021 definition of recycled content, with interpretations aligned to the U.S. Federal Trade Commission Green Guides.
The goal of the GRS is twofold: to increase the use of recycled materials in products and to reduce or eliminate the harm caused by their production. Certification applies to any product that contains at least 20% recycled material, and each stage of production must be certified — beginning at the recycling stage and ending at the last seller in the final business-to-business transaction.
Why Pursue GRS Certification?
For manufacturers and exporters, GRS certification is rarely optional when a major brand is the customer. The most common drivers are:
- Market access. Global brands require GRS from suppliers before they will place orders for recycled-content products.
- Product differentiation. Only products with at least 50% recycled content qualify for the product-specific GRS label, which supports premium positioning.
- Supply chain trust. The chain-of-custody system gives buyers verified proof of recycled content from input to finished product.
- Regulatory alignment. Recycled-content claims must meet legal requirements in each country of sale; GRS helps demonstrate compliance.
GRS Certification Requirements at a Glance
The GRS is built on four requirement pillars, all of which are verified during the annual audit. Understanding them early saves the most time during preparation.
1. Recycled Content
The standard applies to products containing 20% or more recycled content. Only products with at least 50% recycled content qualify for product-specific GRS labeling. Pre-consumer and post-consumer material are recorded separately for every batch, and every recycled input entering the supply chain must be covered by a valid Transaction Certificate (TC) issued by an approved certification body.
2. Social Requirements
Based on the principles of the Global Social Compliance Programme (GSCP) and International Labour Organization conventions, the social module prohibits forced and child labor, protects freedom of association, bans discrimination and abuse, and sets requirements for wages, working hours, and health and safety. The most stringent of national law, local law, or the GRS requirement applies.
3. Environmental Requirements
Certified sites must operate an Environmental Management System (EMS) and a Chemical Management System (CMS). The standard covers energy use, water use, wastewater and effluent treatment, air emissions, and waste management, with tracked indicators and annual improvement targets.
4. Chemical Requirements
The GRS restricts hazardous chemicals in the production of GRS products. Chemical formulations must comply with the ZDHC Manufacturer’s Restricted Substance List (MRSL) and exclude substances of very high concern under REACH. Each chemical input requires an up-to-date Safety Data Sheet (SDS) in the language(s) used by workers and in English.
5. Chain of Custody (Content Claim Standard)
Material is tracked from input to final product under Textile Exchange’s Content Claim Standard (CCS). Two certificate types are central:
| Certificate | What it proves | When it is issued |
|---|---|---|
| Scope Certificate (SC) | Your site is certified and authorized to produce and sell GRS-certified products | After a successful audit, valid for a defined period (commonly 12 months) |
| Transaction Certificate (TC) | A specific shipment follows the GRS standard from material to finished product | For each batch/shipment, after the SC is in place |
A Scope Certificate must exist before any Transaction Certificate can be issued. Traders with an annual turnover below USD 10,000 of GRS products are exempt from certification, provided they do not repack or relabel GRS products. Material collectors and concentrators are not required to hold full certification; a Reclaimed Material Declaration Form is sufficient for their sales.
GRS Certification Process: Step-by-Step
The certification model follows Textile Exchange’s Accreditation and Certification Procedures, applied by independent third-party certification bodies. The sequence below reflects the standard workflow used by approved certification bodies such as SGS, Intertek, Control Union, and TÜV.
Step 1: Define Scope and Submit Application
Identify which products, production lines, and sites will be covered. Confirm your product meets the 20% recycled-content threshold and gather basic documents — business license, process flow chart, and any existing recycled-material supplier certificates. Submit the application to an approved certification body (CB).
Step 2: Conduct Gap Analysis and Build Your System
Compare current practices against the GRS requirements. Build the required management system: a recycled-material traceability ledger, chemical inventory and SDS files, environmental records (wastewater, energy, waste), social documentation (working hours, wages, HR records), and a mass-balance calculation for recycled content. Keep GRS and non-GRS materials clearly separated to prevent mix-ups.
Step 3: Sign Contract and Confirm Quotation
The certification body reviews your application and issues a proposal with the audit scope and fees. After you sign the agreement and complete payment, the audit is scheduled. Costs vary by certification body, the number and type of sites, and audit duration, so request a written quotation before committing.
Step 4: Document Review
The auditor examines your system files — GRS manual, traceability procedures, chemical list, environmental and labor records, and recycled-content calculations. Any gaps are raised as findings to correct before the on-site visit.
Step 5: On-Site Audit
The auditor visits the site to verify practice against documentation: material identification and segregation, batch records, TC coverage of inputs, chemical storage and SDS, wastewater treatment, and worker interviews. GRS-102 sets minimum on-site audit durations — for example, at least 4 hours for a mechanical material recycler, 5 hours for a chemical recycler, 4 hours for a dyeing or extrusion site, and 3 hours for other supply-chain sites, plus additional time for worker interviews based on headcount.
Step 6: Certification Decision and Scope Certificate Issuance
If the audit finds the site compliant (or non-conformities are closed with evidence), the certification body issues the Scope Certificate. Your site is now authorized to produce and sell GRS-certified products.
Ongoing: Transaction Certificates and Annual Surveillance
After certification, apply for a Transaction Certificate for each shipment, using the upstream TCs to calculate the recycled percentage. Certification is maintained through an annual surveillance audit; many certification bodies now operate a 12-month surveillance cycle, so plan renewal well before the certificate expires to avoid a gap.
How Long Does GRS Certification Take?
The timeline depends on how ready your system is and on certification-body scheduling. A typical first certification runs from a few weeks to a couple of months: application and quotation, document review (roughly one to two weeks), on-site audit (commonly one to three days on site), and correction plus certificate issuance (roughly one to two weeks). Sites with a mature management system and complete records move through the process fastest.
How Much Does GRS Certification Cost?
GRS certification fees are set by each certification body and are not fixed by Textile Exchange. They typically include an initial audit fee, a certificate fee, and an annual surveillance audit fee (often a fraction of the initial audit). Total cost scales with the number of sites, the processes involved, and audit duration. The most reliable way to budget is to request a written quotation from your chosen certification body after defining scope.
FAQ: GRS Certification Frequently Asked Questions
The following questions are the ones manufacturers ask most often when planning GRS certification.
Q: What is GRS certification?
A: GRS (Global Recycled Standard) is a voluntary, full product standard owned by Textile Exchange. It verifies recycled content, chain of custody, social and environmental practices, and chemical restrictions through independent third-party certification.
Q: What is the minimum recycled content for GRS?
A: A product must contain at least 20% recycled content to be certified to the GRS. Only products with at least 50% recycled content qualify for the product-specific GRS label.
Q: How long is a GRS certificate valid?
A: A Scope Certificate is typically valid for 12 months. Certification is maintained through an annual surveillance audit, and the certificate must be renewed before expiry to avoid a gap in coverage.
Q: What is the difference between GRS and RCS?
A: Both are owned by Textile Exchange. The Recycled Claim Standard (RCS) verifies recycled content only, with a 5% minimum. The GRS adds social, environmental, and chemical requirements on top of recycled content and chain of custody, with a 20% minimum. Choose RCS to prove recycled content alone; choose GRS for full responsible-production verification.
Q: Is GRS certification mandatory?
A: The GRS is a voluntary standard, but it is effectively required by many global brands as a condition of supply. Small traders with under USD 10,000 annual GRS turnover are exempt if they do not repack or relabel GRS products.
Q: Can I get GRS certified without recycled materials?
A: No. The standard applies only to products containing at least 20% recycled material. A site handling no recycled input cannot be certified to the GRS, though it may still need to manage GRS material passing through under chain-of-custody rules.
Q: How do I prepare for the GRS audit?
A: Start with a gap analysis against the four requirement pillars, build a traceable recycled-material ledger, complete chemical SDS and environmental records, separate GRS and non-GRS materials physically, and train staff. Many sites engage a consultant to accelerate system building.
Q: What is the role of a certification body?
A: An approved, independent third-party certification body reviews your application, conducts the document review and on-site audit, issues the Scope Certificate, and performs the annual surveillance audit. Only certification bodies authorized for Textile Exchange standards may issue GRS certificates.
Conclusion
GRS certification is a structured, verifiable pathway that opens doors to global recycled-material supply chains. With a clear understanding of the 20% recycled-content threshold, the four requirement pillars, and the application-to-surveillance process, most facilities can plan certification confidently. If you are preparing for GRS certification and want a readiness assessment or help building your management system, contact our certification experts for a tailored roadmap.
References
- Textile Exchange. (2020). Global Recycled Standard 4.0 (GRS-101). Retrieved from https://textileexchange.org/
- Textile Exchange. (2020). GRS Certification Procedures 4.0 (GRS-102). Retrieved from https://textileexchange.org/
- Textile Exchange. (2025). Guide to Recycled Materials V2.0 (GRS-202). Retrieved from https://textileexchange.org/
- SGS-CSTC. (2024). GRS & RCS & OCS Certification Process Notification / Introduction. Retrieved from https://publicfiles.sgsonline.com.cn/
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