Compostable Certification Standards 2026: BPI, TÜV, OK Compost & ASTM D6400 — A Global Compliance Guide for Packaging Buyers

If you are sourcing compostable tableware for the North American or European market, the paperwork behind the word “compostable” can be the difference between a smooth customs clearance and a costly reprint — or worse, an FTC enforcement action. The certification landscape for 2026 is more crowded and more carefully policed than ever: BPI and CMA in North America, TÜV AUSTRIA and its OK Compost labels in Europe, and a matrix of ASTM standards — D6400, D6868, and D6866 — that govern distinct aspects of how a product proves it is compostable. This guide walks you through what each mark actually verifies, how industrial and home composting differ, and the regulatory rules (including the US FTC Green Guides and California’s AB 1201) that decide which words you are legally allowed to print on your packaging. As a Qingdao-based factory manufacturing molded bagasse, cornstarch, paper, and cutlery tableware, we hold BPI (ASTM D6400), DIN EN13432, and OK Compost HOME certifications, and we use this material every day to help wholesale buyers source compliant products through our wholesale quote process.

Why Certification Matters More in 2026

Consumer trust in the word “compostable” has been shaken by a wave of greenwashing lawsuits and regulatory fines. The OECD reports that more than 350 million tons of plastic are produced globally every year, with only a small fraction ever recycled, which has pushed buyers toward plant-based alternatives. But not every eco-friendly label is grounded in test data. Certification exists to separate verified performance from marketing language: a certified product has laboratory evidence that it breaks down into usable compost within a defined window, while an uncertified claim is a legal exposure waiting to be challenged.

For B2B buyers, the stakes are practical as well as reputational. Wholesalers and food-service chains increasingly require a recognized certification mark before they will accept a container into their supply chain, and customs inspectors in regions with strict environmental laws may flag shipments whose claims are not backed by documentation. Understanding the standards is no longer optional — it is a procurement skill.

The ASTM Standards: D6400, D6868, and D6866 Explained

Three ASTM documents are frequently mentioned on packaging but describe very different things. Mixing them up is the most common sourcing mistake we see.

ASTM D6400 — Compostability of Plastics

ASTM D6400 is the US standard specification for plastics designed to be composted in municipal or industrial aerobic composting facilities. It applies to single-material plastic products such as PLA films, cornstarch containers, and compostable bags. To earn certification, a product must pass a three-part laboratory evaluation conducted at a controlled 58 °C (136 °F) under active microbial conditions:

Disintegration: after 12 weeks, less than 10% of the original material may remain on a 2 mm screen.
Biodegradation: at least 90% of the organic carbon must convert to CO₂ within 180 days.
Ecotoxicity: the resulting compost must support healthy plant germination with no toxic residues or heavy-metal build-up.

Certification applies to the complete product formulation — additives, colorants, adhesives, and coatings all affect the result. A minor non-compostable pigment or adhesive can sink an otherwise compostable design.

ASTM D6868 — Coated Paper and Molded Fiber

ASTM D6868 covers substrates such as paper or fiber coated, laminated, or extruded with a compostable plastic layer — think a molded bagasse tray with a PLA lining, or a coated coffee cup. The operative rule is that every layer must independently meet D6400’s biodegradation requirements. In other words, a D6868 certificate applies to the assembled structure, not just one resin within it.

ASTM D6866 — Biobased Content (Not Compostability)

ASTM D6866 is a test method that measures the renewable (biobased) carbon fraction of a material using radiocarbon analysis. Because fossil fuels are millions of years old, they contain virtually no carbon-14, while recently living biomass such as sugarcane, corn, or wood carries a known carbon-14 signature. Typical results are about 99% biobased for pure bagasse fiber and 85–95% for a PLA-lined paper cup. Crucially, D6866 does not measure compostability. A cup made of 100% biobased PET is structurally identical to fossil PET and will not break down in a compost facility despite being fully biobased. Do not let a supplier convert “high biobased content” into a compostability claim.

Standard	What it measures	Typical result / cost	What it authorizes
ASTM D6400	Industrial compostability of plastics (disintegration, biodegradation, ecotoxicity)	$15,000–$30,000 per product; 6–12 months; annual renewal $2,000–$5,000	Proof a single-material plastic composts in a commercial facility
ASTM D6868	Compostability of coated/laminated paper or fiber (each layer must pass D6400)	Priced with the assembly; shares the same three lab tests	Proof the finished coated structure composts
ASTM D6866	% biobased (renewable) carbon via radiocarbon analysis	$300–$600 per sample; 2–4 weeks; bulk discounts around $250/sample	Supports “renewable/biobased content” claims only — not compostability

BPI vs. TÜV vs. OK Compost vs. DIN EN 13432

ASTM standards define the tests, but certification bodies issue the marks buyers look for. Two systems dominate trade lanes, and the differences matter for which claim you can make.

North America: BPI and CMA

The Biodegradable Products Institute (BPI) is the most widely recognized compostability certifier in North America. A BPI logo confirms a product passed the relevant ASTM standard — typically D6400 for plastics or D6868 for coated fiber — and BPI requires its mark to be printed on the product itself so composters can identify it in a facility. The Compost Manufacturing Alliance (CMA) goes a step further: it is a group of industrial composters that field-test products across multiple real-world processing technologies. A CMA-approved mark means the product has proven its disintegration in operating facilities, not just in a laboratory.

Europe: DIN EN 13432, TÜV AUSTRIA, and OK Compost

European buyers typically look for certification to DIN EN 13432, which applies the same performance criteria as ASTM D6400 — 90% biodegradation in 180 days and disintegration below 2 mm in 12 weeks — but is administered separately for the EU market. TÜV AUSTRIA runs the OK Compost program, which is split into two distinct tiers that are frequently conflated:

OK Compost INDUSTRIAL — certifies breakdown under the high heat of a commercial facility.
OK Compost HOME — certifies breakdown at the lower, variable temperatures of a backyard pile, a far stricter bar.

Our own factory carries BPI (ASTM D6400) for the North American lane and DIN EN13432 plus OK Compost HOME for European and residential claims, which lets us align certification with the market a customer is actually selling into. When a supplier holds only an industrial mark but is asked for a home claim, that is a red flag worth challenging.

Industrial Composting vs. Home Composting: The Temperature Divide

The single biggest source of consumer confusion — and of greenwashing — is the gap between industrial and home composting. Industrial facilities are actively managed to hold temperatures of roughly 55–70 °C (131–158 °F), with controlled moisture and aeration. A backyard bin rarely approaches those conditions and runs at ambient, fluctuating temperatures. Most certified materials simply never reach their activation point in a home pile: PLA and other bioplastics generally require heat above about 55 °C before biodegradation begins, and field testing has found little to no degradation of such products after several months in a home environment.

The practical consequences for a buyer are significant:

An ASTM/BPI-certified product is, almost always, certified for industrial compost only.
Lab conditions and field conditions differ — a material that disintegrates in a 90-day lab run may take 120–160 days in a real facility, so operators may reject items that compost too slowly.
When in doubt about whether a product belongs in compost, the safer choice is the trash bin. A non-compostable item contaminating a batch can force the entire load to landfill.

Uncoated bagasse is the closest thing to an exception among mainstream materials: as the fibrous byproduct of sugarcane processing, it is naturally compostable and passes D6400 without modification as long as no non-compostable coating is added. Our bagasse tableware, made from a renewable agricultural byproduct, breaks down in commercial facilities in roughly 60–90 days and is grease- and moisture-resistant for hot, oily, or wet food.

The US FTC Green Guides: What You Can Legally Print

Holding a certification is one thing; being allowed to print the word “compostable” is another legal question entirely. Under FTC 16 CFR §260.7, before you make any compostable claim you need competent-and-reliable scientific evidence that the whole item breaks down into usable compost in about the same time as the materials it composts alongside. Then a second, separate rule applies: if the item cannot be composted at home, or if industrial facilities are not available to a substantial majority of buyers, the claim must be qualified to disclose that limitation.

The consequence is that an unqualified “compostable” on an industrial-only material is the classic deceptive-claim pattern. The compliant wording is longer but defensible: “Compostable in industrial/commercial facilities where available — not home compostable.” Crucially, certification alone does not satisfy the FTC’s disclosure requirement; a BPI-certified item with a bare compostable claim is still exposed to enforcement under Section 5 of the FTC Act. Certification is necessary but not sufficient.

California’s AB 1201 and SB 54: Two Separate Gates

Selling into California adds state-level filters on top of the federal rules, and buyers routinely conflate them. AB 1201 is a labeling law: it restricts the words “compostable,” “home compostable,” “biodegradable,” “degradable,” and “decomposable” unless the item qualifies as an allowable input under USDA National Organic Program (NOP) standards — an agricultural-input test that is different from a composting-performance test. A validly ASTM-certified, BPI-marked item can still fail this gate. Enforcement timing has been reported as delayed pending USDA action, with sources pointing to roughly June 30, 2027 — but that date is not settled, so it must be confirmed against current statute text before a print run. SB 54, the Plastic Pollution Producer Responsibility Act, is a separate extended-producer-responsibility law requiring all packaging sold in California to be recyclable or compostable by 2032, with its own compostability definition. The conservative approach in 2026 is to write packaging claims as if both statutes are already fully in force.

How to Verify a Certification and Avoid Greenwashing

Fake or mismatched certificates are common enough that verification is a real procurement step. Here is a practical buyer checklist:

Ask for the test report, not just the certificate. A certificate is a summary; the report shows the raw data — the biodegradation curve, disintegration photos, and ecotoxicity results.
Confirm the certificate covers the finished item. A D6400 certificate issued for a resin does not extend to a coating laminated onto it. Coated structures need D6868 on the assembled product.
Check the issue date and scope. Many certifications are valid for 1–3 years and apply to a specific formulation. A product that passed years ago may fail today if a supplier changed a resin, pigment, or additive.
Match the mark to your claim. Industrial BPI/DIN marks support industrial claims only; only a genuine home certification (such as OK Compost HOME) supports a home-compostable claim.
Look for BPI or CMA logos on the item itself, not just the outer carton, and confirm the certificate number in the issuing registry.

Regulators have shown they will act on overreach. Fines and rulings against brands for misleading environmental claims — including a multi-million-dollar penalty over “ocean plastic” liner claims and a US fine for overstated sustainable-investing criteria — plus pending class actions over “compostable” labeling, make verified claims a genuine liability control. As an own-factory supplier, we provide documentation with each quote so our wholesale partners can verify what they are buying. For a deeper look at how the two ASTM standards interact on individual products, read our comparison of ASTM D6400 vs D6868, or review how to route certified packaging to the right end-of-life stream in our compostable packaging disposal guide.

Frequently Asked Questions

Is a BPI certification by itself enough to legally print “compostable”?

No. BPI certifies that a material meets ASTM D6400, D6868, or the relevant fiber specification — that is the substantiation prong of FTC §260.7. The rule has a second, separate prong: disclosure. Unless industrial composting is available to a substantial majority of the buyers, the claim must be qualified (for example, “compostable in industrial facilities where available”). Certification without the qualifier still risks enforcement under Section 5 of the FTC Act.

What is the difference between ASTM D6400, D6868, and D6866?

D6400 certifies the industrial compostability of a single-material plastic. D6868 certifies a coated or laminated paper or fiber structure, where every layer must independently pass D6400. D6866 measures only the biobased (renewable) carbon fraction via radiocarbon analysis and does not prove compostability at all. A biobased product can fail to compost, so check the right standard for the claim you need to make.

Why won’t certified tableware break down in my backyard compost?

Most certified products are certified for industrial composting, which runs at 55–70 °C with controlled moisture and aeration. A backyard bin runs at ambient temperature and rarely reaches the activation point for materials like PLA, which generally requires heat above about 55 °C to begin biodegradation. Field observations show little to no degradation of such items in home compost even after many months. Home-compostable claims require a specific home certification such as OK Compost HOME.

What does “OK Compost HOME” mean versus “OK Compost INDUSTRIAL”?

TÜV AUSTRIA’s OK Compost program has two tiers. OK Compost INDUSTRIAL certifies breakdown under the high heat of a commercial facility. OK Compost HOME is a stricter certification that verifies degradation at the lower, variable temperatures of a backyard pile. Only the HOME tier supports a home-compostable claim; the industrial tier supports only a qualified industrial claim.

Which standards do our molded bagasse trays meet?

Bagasse is the fibrous byproduct of sugarcane, upcycled into tableware instead of plastic. Uncoated molded bagasse is naturally compostable and typically passes ASTM D6400 without modification, breaking down in commercial facilities in about 60–90 days. If a bagasse tray carries a compostable coating or lining, the finished structure must be tested under ASTM D6868. Our factory holds BPI (ASTM D6400), DIN EN13432, and OK Compost HOME, and we map the appropriate documents to the market each customer sells into.

How much does compostability certification cost and how long does it take?

A full ASTM D6400 certification for a new product typically runs $15,000–$30,000 and takes 6–12 months, because the biodegradation test must run a full 180 days, with annual renewal fees of roughly $2,000–$5,000. ASTM D6866 biobased-content testing is far cheaper and quicker — around $300–$600 per sample with results in 2–4 weeks. This is why it is worth confirming your supplier’s certificates cover your exact product before you commit to a run.

Factory-Direct Sourcing With Verified Certification

Sourcing certified compostable packaging should not force you to gamble on a supplier’s word. As our own factory in Qingdao, China, we manufacture molded bagasse, cornstarch, paper, and cutlery tableware, and we hold BPI (ASTM D6400), DIN EN13432, and OK Compost HOME certifications that we can map to the exact product you are buying. Flexible MOQ, custom OEM logos, and factory-direct wholesale pricing are all available, and we include supporting documentation with every wholesale quote so your compliance team can verify the claim before you commit.

Whether you need BPI-marked bagasse clamshells for the US market or DIN EN13432 trays for Europe, get in touch for a 24-hour quote and free samples. Message us on WhatsApp at +86 176 8572 4081 or email bygj3@qdbiotrade.com, and we will match the right certified product to your market — not just the nearest available stock.

Explore Our Range

For a deeper dive into how certification applies product by product, see our comparison of ASTM D6400 vs D6868 for packaging materials and our guide to disposing of compostable packaging correctly. You can also review the full list of marks and documentation we hold on our certifications page, or explore our molded bagasse plates, bowls, and clamshell boxes to see the certified tableware we produce.

Compostable Certifications 2026: BPI, TUV, OK Compost & ASTM Matrix