Four certifications that answer four different questions.
Most sourcing conversations stall because the certificate being asked for is not the one the claim actually needs. Here is what each standard covers, what it does not, and the scenario where it is the right answer.
Four textile certifications come up in almost every enquiry that reaches our desk: GOTS, OCS, GRS and OEKO-TEX Standard 100. They are not competing grades of the same thing, and they are not interchangeable. They answer different questions. This is textile certifications explained from the loom shed rather than from a brochure — we are a certified fabric manufacturer in India holding all four, so we see every week which claims genuinely need which paperwork, and which requests are simply habit.
The short version. GOTS vs OEKO-TEX is a comparison between a process standard and a product test — they barely overlap. OCS vs GOTS is a comparison between a content-only standard and a full process standard for the same organic fibre. GRS certification for fabric is about recycled content, and says nothing about organic. And OEKO-TEX Standard 100 is the only one of the four that puts the finished cloth in a laboratory.
The distinction that explains all four
Before the individual standards, one split does most of the work. Every certification in this article belongs to one of two families:
- Chain-of-custody standards (GOTS, OCS, GRS, RCS). These follow material. They certify facilities through a scope certificate and document individual shipments through a transaction certificate. They answer: where did this material come from, and did it stay what it claims to be?
- Product tests (OEKO-TEX Standard 100). These take the finished article to a laboratory and measure it against a published list of limit values. They answer: what is in this cloth?
A chain-of-custody standard cannot tell you a fabric is free of a particular substance. A product test cannot tell you the cotton was grown organically. Buyers who understand that one sentence stop over-specifying almost immediately.
GOTS: organic fibre plus how it was processed
The Global Organic Textile Standard is held by a non-profit organisation, Global Standard gGmbH, and audited by accredited third-party certification bodies — not by the standard owner itself.
What it certifies: organic fibre content and environmental and social criteria across the whole processing chain — ginning, spinning, weaving, dyeing, finishing, making-up and trading. That includes restricted dyes and auxiliaries, wastewater treatment at wet-processing units, and labour criteria based on the core ILO conventions.
Labelling grades: the "Organic" grade requires 95% or more certified organic fibre. The "Made with Organic" grade requires 70% or more, with restrictions on what the balance may be.
Chain of custody: yes — scope certificates for facilities, transaction certificates for consignments.
What it does not certify: it is not a finished-article safety test, so it does not replace OEKO-TEX Standard 100 where a customer or regulator wants test data on the product. It has nothing to say about recycled content.
The buyer scenario: you are putting the word organic on a garment label or a website, and you want the environmental and social story behind it to survive an audit or a journalist.
OCS vs GOTS: organic content, and nothing else
The Organic Content Standard is owned by Textile Exchange and, again, audited by approved third-party bodies.
What it certifies: the amount of organic material in a finished product, and the chain of custody that got it there. That is the entire scope. OCS verifies that the organic fibre you paid for is physically the fibre in your cloth.
Grades: OCS 100 covers products that are effectively all certified organic fibre — 95% or more. OCS Blended covers products where certified organic fibre is blended with other fibres, down to a low minimum proportion.
What it does not certify: no chemical restrictions. No wastewater requirements. No social criteria. A fabric can be perfectly OCS certified and dyed with chemistry GOTS would not permit.
The buyer scenario: your claim is strictly about fibre content — "made with X% organic cotton" — and your chemical and social compliance is already handled by your own restricted substances list and factory audit programme. OCS is cheaper and faster to run than GOTS because it audits less. If your marketing claim only needs the fibre verified, asking for GOTS is buying paperwork you will not use.
GRS certification for fabric: recycled content with guardrails
The Global Recycled Standard, also held by Textile Exchange, is the recycled-content counterpart to GOTS in structure: content plus process criteria.
What it certifies: recycled input content, verified through the chain of custody, plus social, environmental and chemical criteria at each certified stage.
Thresholds: a product needs at least 20% recycled content to be GRS certified and carry a recycled claim; 50% or more before the GRS logo may appear on the product itself.
The content-only sibling: RCS, the Recycled Claim Standard, does for recycled fibre exactly what OCS does for organic — it verifies content and traceability with no social, environmental or chemical requirements attached.
The buyer scenario: you are making a recycled-content claim on a product or in a tender response, and — as with GOTS — you want the processing criteria behind it. If you only need the percentage verified, RCS is the lighter instrument.
OEKO-TEX Standard 100: what is in the cloth, not how it was made
This is the one that gets misread most often, so it is worth being precise. OEKO-TEX Standard 100 is issued by the OEKO-TEX Association through its member testing institutes. It is a product-level test for harmful substances on the finished article — and on every component of it, including sewing thread, prints, coatings and trims.
Product classes: limit values tighten according to how much skin contact the article has.
- Class I — articles for babies and toddlers. The strictest limits.
- Class II — articles worn next to the skin.
- Class III — articles not worn next to the skin.
- Class IV — furnishing and decoration materials.
Chain of custody: no. Certificates are issued per article or product group and renewed on a fixed cycle. There is no transaction certificate, because nothing is being traced — something is being tested.
What it does not certify — read this twice: it says nothing about organic content, recycled content, water use, energy, or working conditions. A conventional-cotton fabric from a mill with no environmental programme at all can hold a valid Standard 100 certificate, provided it passes the tests. If you need the social and environmental layer as well, OEKO-TEX's MADE IN GREEN label is the product label that combines Standard 100 testing with facilities audited under STeP.
The buyer scenario: you need documented assurance that the fabric will not carry a restricted substance into a baby-wear range, a school uniform, or a market with strict chemical enforcement.
Where BCI and Fair Trade fit
Two more names come up, and neither does what buyers usually assume.
Better Cotton (formerly BCI) is a farm-level programme: it trains and verifies growers on better agricultural practice. Crucially, it operates mainly on mass balance. Volumes of Better Cotton are matched through the supply chain, but the physical cotton in your specific fabric is not necessarily Better Cotton. It is a credible sustainability investment; it is not a physical-traceability claim, and it is not organic — conventional inputs are permitted.
Fair Trade certifies producer terms rather than the material itself: minimum prices, a premium paid to producer organisations, and labour standards. It answers a question about economics and equity, not about fibre or chemistry.
The four standards side by side
| Standard | What it certifies | Chain of custody? | Social criteria? | Chemical criteria? | Typical buyer reason |
|---|---|---|---|---|---|
| GOTS | Organic fibre + full processing | Yes | Yes | Yes | An audited "organic" label claim |
| OCS | Organic fibre content only | Yes | No | No | Verify an organic-content percentage |
| GRS | Recycled content + processing | Yes | Yes | Yes | An audited recycled-content claim |
| RCS | Recycled content only | Yes | No | No | Verify a recycled percentage |
| OEKO-TEX Std 100 | Harmful substances in the finished article | No — product test | No | Yes, by test | Product safety and buyer assurance |
| Better Cotton | Farm-level practice (mass balance) | Mass balance, not physical | Yes, at farm level | No | Programme-level sustainability |
| Fair Trade | Producer terms and premium | Varies by scheme | Yes | No | Equity and livelihoods story |
Which one do you need?
Five scenarios that cover most of what walks through our door.
Baby and children's wear
OEKO-TEX Standard 100, Class I, is the non-negotiable. Add GOTS or OCS on top only if the range also carries an organic claim. The safety question and the organic question are separate, and Class I answers the first one.
A retailer's organic line
GOTS if the label says "organic" and the brand story includes processing and labour. OCS if the claim is a content percentage and your own compliance programme already covers chemistry and audits. Deciding this before the enquiry goes out saves weeks.
A recycled-content claim
GRS, with RCS as the lighter alternative when only the percentage matters. Confirm which threshold your claim sits above before you print anything — logo use and claim wording are governed separately.
An EU or US safety requirement
OEKO-TEX Standard 100. It is strong supporting evidence for buyer and retailer chemical requirements and it demonstrates active substance management. Treat it as evidence, not as a substitute for legal compliance — regulatory obligations sit with the importer regardless of certification.
A private-label programme with no green claim
Strictly, none of them are required. In practice, Standard 100 is cheap insurance and the easiest single document to hand to a nervous customer. And a mill that already runs GOTS and GRS lines tends to have tighter chemical management across every order, certified or not.
Four mistakes we see every month
- Treating OEKO-TEX as an organic claim. It is a test for harmful substances. It has no view on the fibre's origin. This is the single most frequent confusion in the whole category.
- Assuming a certified mill means a certified product. A scope certificate means a facility is approved to handle a certified process. Your order still has to be planned, run and documented as certified. Ours are, when you tell us at enquiry stage — not after the yarn is on the beam.
- Asking for GOTS when OCS is what the claim needs. Over-specification costs money and lead time, and narrows the mills that can quote you.
- Forgetting the transaction certificate. The TC ties a specific consignment to the certified chain. Without it, the certified goods in your warehouse are, on paper, just goods. Ask for it as part of the shipping document set, not as an afterthought.
How we handle this at the mill
Yoga Fabrics holds GOTS, OCS, GRS and OEKO-TEX Standard 100, and we align with Better Cotton and Fair Trade principles. Practically, that means we can weave to whichever standard your programme's claim actually requires rather than pushing you toward the one we happen to hold — across cotton, linen, Tencel, modal, rayon, LENZING ECOVERO and blends, from 40 to 600 GSM and yarn counts of 6s to 100s Ne.
Certification does not replace testing. Our in-house QC lab checks count, GSM, colour fastness and shrinkage on every production lot against US, EU and Australian benchmarks, because a certificate tells you about a system and a test tells you about your cloth. You can see the full certification picture on our sustainability page, browse constructions in collections, and see how the certified and conventional lines run side by side in manufacturing.
If you are unsure which standard your claim needs, tell us the claim you intend to make and the market it is going into. That is usually a five-minute answer, and it is a better first question than "are you certified?" — send us the brief.