BPI vs EN 13432 vs OK Compost: How Bakery Packaging Buyers Should Veri
BPI vs EN 13432 vs OK Compost: How Bakery Packaging Buyers Should Verify Compostable Claims
Compostable and recycled-content claims on bakery packaging are only as strong as the documents behind them. This guide explains how the three certification systems that buyers encounter most often — BPI in North America, EN 13432 in Europe, and TÜV Austria's OK Compost labels — differ in what they…
Summary
Compostable and recycled-content claims on bakery packaging are only as strong as the documents behind them. This guide explains how the three certification systems that buyers encounter most often — BPI in North America, EN 13432 in Europe, and TÜV Austria's OK Compost labels — differ in what they test, which markets they serve, and what they cannot prove. It also clarifies where FSC and GRS fit for fiber-based packaging, why a logo printed on a sales sheet never covers every SKU, and how to align a compostability claim with the waste-stream rules of your destination market. The practical takeaway: treat every certification as SKU-specific, destination-specific, and date-sensitive, and confirm documents for your exact items, quantities, and markets before approving an order.
Estimated reading time: 7 minutes
Why Compostable Claims Need Verification Before You Buy
"Biodegradable" and "eco-friendly" have become filler words in packaging sales conversations. They rarely survive a customer audit, a retailer onboarding questionnaire, or a composting program's acceptance review. For a bakery chain specifying bagasse cake domes, or a dessert brand mailing pastries in compostable bakery bags, the gap between a claim and a certificate can mean rejected shipments, greenwashing complaints, or packaging end customers cannot actually compost.
A credible compostability certification answers three questions with test evidence: does the packaging break down under controlled composting conditions, within a defined time frame, and without leaving residues that damage the finished compost. That is what separates a compliance document from a marketing line.
Fiber-based packaging adds one more layer. Coatings, grease barriers, printing inks, adhesives, and laminations all influence the compostability outcome. A plant-fiber cake dome is not inherently compostable — the finished construction is what gets tested.
EN 13432: The European Standard for Industrial Compostability
EN 13432 is the reference standard behind most industrial-compostability claims in the EU. It evaluates the finished packaging under controlled industrial composting conditions across several pillars:
Biodegradation: microorganisms must convert the organic material into CO2 at a defined rate within the test period.
Disintegration: after composting, the material must physically break down past a defined sieve fraction, with no large visible fragments left behind.
Ecotoxicity: the resulting compost must not inhibit seed germination or plant growth.
Regulated constituents: heavy metals and other regulated elements must stay below defined limits.
Two verification points matter for buyers. First, the evidence should correspond to the finished package — a report on raw pulp does not prove that a printed, coated cake box is covered. Second, EN 13432 supports a compostability claim; it is not a blanket market authorization. EU packaging legislation and member-state collection systems shape where and how the claim can be used, so the destination market always needs its own check.
BPI: The North American Certification Route
In the United States and Canada, BPI — the Biodegradable Products Institute — runs the certification program most commercial composters and foodservice buyers recognize. BPI verifies products against the applicable ASTM benchmark — D6400 for plastics, D6868 for compostable coatings on paper — through third-party laboratory testing and documentation review.
Certified products appear in BPI's public product directory, and that directory is where verification should happen. A practical habit for procurement teams: search the directory for the supplier's company name, confirm the exact product family, and check that the listing is active. BPI certification is company- and product-specific, runs on renewal cycles, and can be affected by formula, coating, or supplier changes.
BPI has also tightened its requirements around fluorinated chemistry (PFAS). For grease-resistant bakery packaging this matters: an older fluorinated grease barrier can disqualify a product that would otherwise qualify. When compostability and oil resistance both matter for your items, ask for the PFAS-related evidence alongside the compostability documents rather than assuming one covers the other.
OK Compost INDUSTRIAL vs OK Compost HOME: Two Different Claims from TÜV Austria
TÜV Austria's OK Compost family appears frequently on European retail packaging, and the two labels mean different things.
OK Compost (industrial) verifies compatibility with industrial composting facilities — higher temperatures, controlled moisture, managed processes. It does not prove the product will break down in a backyard bin.
OK Compost HOME verifies breakdown at the lower temperatures of a home compost pile, roughly 20–30°C ambient, under less controlled conditions. Backyard heaps run cooler and fluctuate more than industrial plants, which is what makes the HOME claim the harder one to certify.
The verification rule works in both directions: never read HOME status into an industrial certificate, or industrial status from a HOME one. Check the certificate number, the licensee, the covered product family, and the maximum thickness or grammage — certificates are issued within construction limits, and a thicker or differently coated version may fall outside them.
Where FSC and GRS Fit — and Where They Don't
Buyers often see FSC or GRS marks near compostability claims and assume they belong to the same compliance family. They measure different things.
FSC (Forest Stewardship Council) certifies responsible fiber sourcing and chain of custody. It speaks to where the fiber came from, not how the finished package behaves in compost.
GRS (Global Recycled Standard) verifies recycled content and responsible production practices. A recycled-board gift box can carry GRS evidence for its content and still need separate compostability evidence if a compostable claim is printed.
So for a recycled-board gift box or a kraft bakery bag, FSC or GRS documentation supports sourcing and recycled-content claims; compostability claims need their own certification route. Keeping the two separated in your compliance files makes audits faster and keeps marketing copy defensible.
North America vs the EU: Matching Claims to Waste Streams
"Which bin does it go in?" has no single international answer. Sorting guidance is set by each market's own collection, labeling, and organics-processing systems.
In North America, compostability claims for foodservice packaging are typically anchored to BPI certification, and acceptance still varies by municipal program and commercial composter. A BPI-listed item improves the odds of program acceptance, but it does not guarantee every curbside route.
In the EU, industrial-compostability claims draw on EN 13432, and how those claims are used is shaped by EU packaging legislation plus member-state rules on labeling, collection, and organics treatment.
The sourcing implication is straightforward: define the disposal route you intend to claim for, in the destination market, before approving artwork. A cake dome sold in Germany and the same design sold in California may need different claim wording even with equivalent certifications.
What to Ask a Supplier Before You Commit
Treat certification documents like a compliance file, not a brochure. Before approving samples or placing bulk orders, request:
Certificate or listing evidence per claim — certificate number, holder name, issuing body, and validity dates.
SKU-level scope mapping — which product families, sizes, coatings, printing states, and grammages the certificate actually covers.
Finished-product evidence — confirmation that tests were run on the finished construction, not only on raw material.
Food-contact documents separately — compostability certification is not food-contact approval; ask for the food-contact evidence for your market on its own.
PFAS-related evidence where grease resistance matters — a declaration plus test reports matching the quoted product.
Claim-by-market confirmation — how each claim should be worded under the destination market's sorting and labeling rules.
Batch linkage — how the supplier ties certificates and reports to your production runs, and whether that linkage will be confirmed in writing per order.
A supplier who can answer these questions per SKU is far easier to audit than one who sends a logo file and a sales sheet.
How Takeawaypack Handles Certification Requests
Takeawaypack is a foodservice packaging brand and procurement coordinator that works with multiple packaging manufacturers across categories including cups, bowls, boxes, containers, trays, lids, bags, and cutlery. Because certification lives at the product and factory level rather than the brand level, the honest answer to "are you certified" is always SKU-specific.
Select kraft and molded-pulp lines in the Takeawaypack range are covered by compostable or recyclable-related certification, and certification documentation can be provided for the specific SKU, confirmed by order quantity and destination market. On the sourcing side, one of the network's supplying mills, Wenzhou Chenglong Paper Plastic Products Co., Ltd., holds FSC Chain of Custody certificate GFA-COC-006105 (valid through February 2027) and GRS 4.0 certificate TE-00121899 (valid through November 2026) — factory-level certificates that apply to qualifying products rather than a blanket brand claim.
In practice this means: tell us the item, the quantity, and the destination market, and we will confirm which documents exist for that exact configuration — before you commit, not after.
Next Steps for Bakery and Dessert Buyers
Whether you are specifying bagasse cake domes for a regional bakery chain, recycled-board gift boxes for holiday assortments, or compostable bakery bags for DTC dessert shipping, build the verification step into sourcing:
List every claim you intend to print, per market.
Request the matching documents per SKU, with validity dates.
Confirm the waste-stream wording for each destination before artwork approval.
To start, send your SKU list, estimated quantities, and destination markets via https://takeawaypack.com. You will get a document-backed answer on which items can carry the claims you need — with flexible MOQs for stock items and custom MOQs quoted per product and production process.
