OEKO-TEX vs GRS Certification: What Do They Mean for PSF Buyers?

Suppliers in the PSF market reference OEKO-TEX and GRS constantly — on product pages, in quotation emails, in COA footers. Most buyers treat these certification names as interchangeable badges of quality. They are not interchangeable. They certify entirely different things, and using the wrong one to verify the wrong claim creates compliance gaps that surface — expensively — in retail audits, brand supplier reviews, and regulatory inspections.

This guide explains both certifications clearly, tells you exactly what documents you need for each, and gives you a decision table for which certification your specific product and market requires. It does not assume prior knowledge of certification frameworks.

The essential distinction in one sentence: OEKO-TEX is about chemical safety. GRS is about recycled content.  OEKO-TEX Standard 100 tests fiber for harmful substances — it says the product is safe for human contact. GRS (Global Recycled Standard) verifies that fiber contains a certified minimum percentage of recycled input — it says the product contains verified recycled content. A fiber can be OEKO-TEX certified without being recycled. A fiber can be GRS certified without being tested for harmful substances. Most buyers supplying EU or US markets need both.

1. The Four Certifications You Will Encounter: What Each One Actually Covers

Table 1: Textile Certification Comparison — OEKO-TEX, GRS, RCS, and Made in Green

Note: GOTS (Global Organic Textile Standard) is not included in this table because it covers organic fiber (cotton, wool) — not polyester staple fiber. For PSF sourcing, GOTS is not applicable. The four standards above are the relevant framework for PSF buyers.

2. OEKO-TEX Standard 100: The Four Classes Explained

OEKO-TEX Standard 100 is divided into four product classes based on the intensity of human contact. The class determines how strict the chemical limits are. For PSF, the relevant classes are I (baby/children products) and II (adult skin-contact products).

Table 2: OEKO-TEX Standard 100 — Four Classes for PSF Buyers

The optical brightener rule for Class I: OBA-free fiber is required for any product certified to OEKO-TEX Class I  Optical Brightening Agents (OBAs) are fluorescent whitening chemicals that make fiber look brighter and whiter. Standard commercial PSF often contains OBAs. OEKO-TEX Class I prohibits them entirely for baby and infant products. If you specify OEKO-TEX Class I, you must explicitly request OBA-free (natural white) fiber. Optical white fiber (which contains OBAs) cannot carry Class I certification regardless of other parameters.

3. GRS: The Two Documents You Must Have

GRS certification for a specific shipment requires exactly two documents. Neither substitutes for the other:

Scope Certificate

The scope certificate confirms that a specific facility is currently GRS-certified to produce or trade recycled fiber. It is issued by the certification body (Control Union, Bureau Veritas, SGS, SCS Global, Intertek), covers a 12-month period, and lists the certified product categories. Verify every scope certificate at the certification body’s public database — do not accept a PDF without verifying the certificate number online. Control Union: scsisearch.controlunion.com. Bureau Veritas, SGS, SCS, Intertek all maintain public lookup tools.

Transaction Certificate (TC) — per shipment

The transaction certificate is issued per purchase order and is the proof that your specific shipment contains GRS-certified recycled content. It includes: buyer name, seller name, product description, recycled content percentage, quantity, your PO number, and the certification body reference. Without a TC for your specific order, the fiber is not certified for that shipment — regardless of what the scope certificate says or what the supplier’s website claims.

The most common GRS documentation failure: Buyers hold a scope certificate but have never received a transaction certificate  In supplier audits and brand compliance reviews, this is the single most frequently found GRS documentation gap. Buyers have a PDF of their supplier’s scope certificate on file and assume that constitutes GRS compliance. It does not. Request a TC explicitly in your purchase order terms — state it as a condition of payment — and file each TC linked to the purchase order number it covers.

4. RCS vs GRS: When RCS Is Sufficient and When It Is Not

RCS (Recycled Claim Standard) is the lighter version of GRS, also managed by Textile Exchange. The key differences:

• Minimum recycled content: RCS requires just 5% recycled input (vs 20% for GRS); GRS requires 50%+ for a full product label claim
• Social auditing: RCS does not include social requirements (no labour auditing); GRS does
• Environmental requirements: RCS has no environmental management requirements; GRS includes basic chemical management and environmental standards
• Cost: RCS audits are less expensive because scope is narrower

In practice: RCS is accepted by some buyers as evidence of recycled content, but major EU and US brand programmes require GRS because of its additional social and environmental auditing requirements. If you are supplying to a brand with a public sustainability commitment or an EU retailer facing DPP requirements, default to GRS. If your customer explicitly accepts RCS, it may be sufficient — but verify before using RCS documentation for a GRS claim.

5. Which Certification Does Your Product Require?

Table 3: Certification Decision Guide by Product and Market

This table reflects standard commercial practice as of Q1 2026. Regulatory requirements change — verify applicable certification requirements with your compliance team, brand partner, or certification body before specifying for a new market or product type.

6. Practical Verification: Checking Certifications Before You Order

Every certification check takes under five minutes. Do all of them before placing a first commercial order on a new supplier or new grade:

Verifying OEKO-TEX Standard 100

• Go to oeko-tex.com and click the certificate check tool
• Enter the 5-digit certificate number from the supplier’s document
• Confirm: (a) certificate is current — not expired; (b) the class matches what you requested (Class I or II); (c) the product category listed covers polyester staple fiber; (d) the company name and address match your supplier’s facility
• A certificate that cannot be found, is expired, or covers a different product scope is not valid for your order

Verifying GRS Scope Certificate

• Identify the certification body from the scope certificate (Control Union is most common for PSF)
• Go to that CB’s public database and search by certificate number or company name
• Confirm: current validity, covers polyester staple fiber production or trading, lists the correct facility address
• Then request a sample TC from a recent GRS shipment before your first order — this confirms the supplier actually issues TCs and shows you what documentation format you will receive

Buyer Tip: Annual renewal means last year’s certificate is not valid  Both OEKO-TEX and GRS scope certificates are issued for 12-month periods and must be renewed annually through a re-audit. A 2024 OEKO-TEX certificate displayed in 2026 is expired and invalid. Check the expiry date on every certificate at PO sign-off, not just when you first onboard a supplier. Certificates expire mid-year on their anniversary date — not necessarily at calendar year-end.

7. How the EU Digital Product Passport Changes the Certification Landscape

The EU Digital Product Passport (DPP), mandatory for large enterprises in textiles from July 19, 2026, has elevated the practical importance of GRS certification from a sustainability differentiator to a market access requirement for EU-bound PSF. Key implications:

• DPP requires documented, traceable recycled content claims — GRS Transaction Certificates are the mechanism that makes this documentation possible
• Brands and retailers subject to DPP are flowing the requirement downstream to fiber suppliers — if you supply an EU large enterprise, expect formal requests for GRS TC documentation
• The EU Green Claims Directive makes unverified sustainability claims legally actionable — a “made from recycled fiber” claim without a GRS TC chain is now a potential regulatory violation for EU brands
• OEKO-TEX does not address DPP requirements — it certifies chemical safety, not recycled content traceability. Both are needed for the full EU 2026 compliance picture

Need PSF with both OEKO-TEX and GRS certification?
VNPOLYFIBER supplies PSF with OEKO-TEX Standard 100 Class I and Class II certification (verified at oeko-tex.com) and GRS-certified recycled grades with Transaction Certificate per shipment. Both certifications are available as a standard documentation package — not an add-on.

Tell us your product type, target market, and certifications required — we will confirm current certificate status and send a sample TC from a recent GRS shipment alongside your pricing quote.

-> Request certified PSF documentation at vnpolyfiber.com/contact

Frequently Asked Questions

Q: What is the difference between OEKO-TEX and GRS certification?

A: OEKO-TEX Standard 100 certifies that a fiber has been tested and found free of harmful substances at or above restricted thresholds — it is a chemical safety certification. GRS (Global Recycled Standard) certifies that a fiber contains a verified minimum percentage of recycled input with a documented chain of custody from the recycler to the finished fiber — it is a recycled content certification. A fiber can hold both simultaneously (and most PSF buyers supplying EU/US markets should require both), but each certifies an entirely different claim.

Q: Do I need OEKO-TEX Class I or Class II for pillow filling?

A: Class II is the minimum for adult pillow filling (direct skin contact during sleep). Class I is required for any product intended for babies and children under 36 months — including infant pillows, baby cushions, and stuffed toys. The key practical difference is that Class I prohibits optical brightening agents (OBAs), requires tighter formaldehyde and pH limits, and imposes stricter heavy metal and pesticide thresholds. Verify the class explicitly on the certificate at oeko-tex.com before ordering.

Q: Is a GRS scope certificate enough to prove my PSF is GRS certified?

A: No. A scope certificate confirms that the supplier’s facility is currently certified to produce GRS-compliant fiber — it proves capability, not delivery. You also need a Transaction Certificate (TC) for every individual purchase order, which proves that your specific shipment contains GRS-certified recycled content. Most GRS documentation failures in brand audits involve buyers who hold a scope certificate but have never received a TC for any of their actual orders. Request the TC explicitly in your purchase order as a condition of payment.

Q: What is the difference between GRS and RCS?

A: GRS (Global Recycled Standard) requires minimum 20% recycled content for certification and 50%+ for a full label claim, includes social and environmental auditing, and covers chain-of-custody traceability. RCS (Recycled Claim Standard) requires minimum 5% recycled content, tracks only recycled content chain-of-custody without social or environmental auditing, and is less expensive to certify. Major EU and US brand programmes with sustainability commitments generally require GRS. RCS may be sufficient for buyers whose customers accept a lower-rigour recycled content claim.

Q: Does OEKO-TEX certification cover recycled content?

A: No. OEKO-TEX Standard 100 tests only for the presence of harmful substances in the finished fiber — it does not verify organic origin, recycled content, or production sustainability. A GRS scope certificate plus Transaction Certificate is the required documentation for verified recycled content claims. Both certifications can and should be held simultaneously for PSF supplying EU retail markets.