Compostable Straw Certification Requirements: Buyer Guide

Compostable Straw Certification Requirements: What EU and US Buyers Must Ask For

As of September 2026, compostable straw certification requirements for EU and US buyers centre on two standards: EN 13432 for Europe and ASTM D6400 with BPI certification for the United States. Both are industrial-composting standards, not home-composting ones. Paper, PLA and bamboo straws also need food-contact approval — EU Regulation 10/2011 or FDA 21 CFR — before they can legally touch food or clear customs without delay.

The Three Certification Categories Every Straw Order Needs

Buyers frequently bundle three separate documents into one request. They are not interchangeable, and a missing one is a common cause of rejected shipments at EU ports.

• Compostability: EN 13432, ASTM D6400 or AS 4736 for industrial composting; OK Compost HOME or AS 5810 for home composting.
• Food contact: EU 10/2011 with Framework Regulation 1935/2004, US FDA 21 CFR 176.170, or BfR Recommendation XXXVI for paper and board.
• Factory and fibre sourcing: ISO 22000 or BRCGS for the plant, plus FSC or PEFC chain of custody for the pulp.

Note one common trap: biodegradable is not a certification. It carries no pass or fail threshold, no accredited laboratory test and no expiry date, so it cannot be relied on in a tender document or a customs file.

Compostable Straw Certification Requirements by Market: EU, US, UK, Australia

Standards diverge sharply by region, and a certificate valid in one market carries little weight in another.

• EU: EN 13432 requires 90% disintegration within 12 weeks and 90% biodegradation within 180 days. Single-use plastic straws have been banned under Directive (EU) 2019/904 since 3 July 2021.
• US: ASTM D6400 requires 90% conversion to CO2 within 180 days, verified by BPI. California, Oregon, Washington, Colorado, New Jersey, Vermont and Maine restrict plastic straws, several on a request-only basis.
• UK: BS EN 13432 is the reference standard; single-use plastic straws were banned in October 2020, with medical and disability exemptions still in force.
• Australia: AS 4736 covers commercial composting and AS 5810 covers home composting; most states have phased out plastic straws.

Because each jurisdiction tests differently, a single global label is rarely sufficient. Most exporters now print region-specific cartons rather than repeat one claim worldwide. For a side-by-side comparison of the two dominant marks, see Compostable Straw Certification: BPI vs EN 13432.

Why EN 13432 Straws Often Fail in Home Compost Bins

This mismatch drives more greenwashing disputes than any other issue. EN 13432 and ASTM D6400 certify performance at industrial temperatures of 55 to 60 °C. A domestic heap rarely exceeds 30 °C, so an EN 13432 straw may not visibly break down within a season.

If your retail channel targets home composters, request OK Compost HOME or AS 5810 evidence and align the on-pack wording with it. Regulators in the EU and UK have tightened scrutiny of unqualified compostable claims, and mismatched labels are the fastest route to a delisting notice or a customs query.

Supplier Vetting Checklist for Compostable Straw Certification Requirements

Work through this list in order. If a supplier cannot produce the first two items within 48 hours, treat the compostable claim as unverified.

1. Request the certificate as a PDF bearing the supplier legal entity name, not a cropped screenshot.
2. Verify the certificate number directly on the BPI, DIN CERTCO or TÜV Austria database.
3. Confirm the certified product matches your actual SKU, wall thickness and colour.
4. Ask for a food-contact migration test report dated within the last 24 months.
5. Confirm MOQ and lead time early: paper straw orders typically start at 50,000 pieces with 15 to 25 day production runs.
6. Request a pre-production sample batch with the certificate reference printed on the carton.

A qualified BPI certified compostable straw supplier will share all six items before you raise a purchase order.

FAQ: Compostable Straw Certification Requirements

Q: Do compostable straws need certification to clear EU customs?
A: Yes in practice. Customs and market surveillance authorities may request a Declaration of Conformity under Regulation (EU) 10/2011 plus an EN 13432 certificate. Missing either document can hold a container for several weeks.

Q: Is BPI certification accepted in the EU?
A: No. BPI is recognised in the US and Canada. EU buyers should request EN 13432, although many factories hold both marks and can print packaging per destination market.

Q: How long does compostability certification take and what does it cost?
A: A single straw family typically takes 8 to 14 weeks and USD 3,000 to 8,000 with an accredited laboratory. Certificates are usually valid for three to five years, subject to annual surveillance.

Conclusion

Matching certificates to the disposal conditions your customers actually have is the core of compliant compostable straw sourcing. Confirm EN 13432 or ASTM D6400 for industrial streams, OK Compost HOME for domestic streams, and a current food-contact report for every SKU you import.

ZTstraw has manufactured eco-friendly straws and tableware for over 30 years, exporting to more than 30 countries, and supplies BPI and EN 13432 documentation with every bulk order. Send your target market and volume to sales@ztstraw.com or browse our products to confirm certificates before you commit.

Sourcing compostable straws to a specific market? Tell us your target market and the standards your buyers ask for — our factory team will outline the certification documents and food-contact reports relevant to your SKU. No obligation.