PFAS-Free Molded Fiber Packaging: Specs, Tests and Paperwork
Key points
- Fluorinated oil repellents were once common in molded fiber, and EU rules, many US states and certifiers such as BPI now restrict them.
- A written spec should say no intentionally added PFAS in any component and set a fluorine limit tested on production samples, not only on a sample.
- Total fluorine screening and targeted PFAS analysis answer different questions, so many buyers order both before the first shipment.
For years, the easiest way to make a molded fiber plate or clamshell hold greasy food was a fluorinated oil repellent mixed into the pulp. It worked at low doses and cost little. It also added per- and polyfluoroalkyl substances (PFAS) to a product sold as compostable, and PFAS do not break down in compost or anywhere else in any practical timeframe.
That has changed quickly. Regulators in the EU and several US states have restricted PFAS in food packaging, and compostability certifiers set fluorine limits of their own. Many Vietnamese molded fiber factories that serve export buyers now offer fluorine-free formulations. But “PFAS-free” on a quote is still only a claim. What protects you is a clear specification, the right test and a paper trail that matches the product you actually receive.
This article covers what to write into your spec, which tests answer which question, barrier alternatives with their trade-offs and red flags in supplier answers. It is a practical buyer’s guide, not legal advice. Confirm the rules for your market with your compliance advisor.
Why PFAS ended up in molded fiber
Bagasse and other plant fibers absorb water and oil readily. Without a barrier, hot soup softens a bowl and fried food leaves grease stains through the base. Manufacturers solved the water side with sizing agents such as AKD (alkyl ketene dimer), which is not fluorinated. The oil side was harder, and fluorochemical grease-proofing agents became the standard answer in much of the industry.
The problem is persistence. PFAS in packaging can migrate into food, and when the packaging is composted the fluorinated compounds end up in the finished compost. For a product whose whole selling point is a clean return to soil, that undermines the claim.
What regulators and certifiers expect
Rules differ by market and they keep moving. The table summarizes the main reference points buyers ask about. Treat it as an orientation, then check the current text.
| Market or scheme | What it expects (summary) | Notes for buyers |
|---|---|---|
| European Union | The Packaging and Packaging Waste Regulation (PPWR) restricts PFAS in food-contact packaging, with the restriction applying from August 2026. It sets limits for individual PFAS and their sum by targeted analysis, and a limit for total PFAS. | Some member states, for example Denmark, had national bans on PFAS in paper and board food contact materials earlier. |
| United States, federal | The FDA has stated that grease-proofing substances containing PFAS are no longer being sold for food contact use in the US market. | Federal food contact rules (21 CFR) still apply to the rest of the formulation. |
| United States, states | Several states, including California, New York and Washington, prohibit intentionally added PFAS in some or all food packaging. Scope, dates and thresholds differ. | California also uses a total organic fluorine threshold of 100 ppm as one test. |
| BPI (US compostability) | Certified products must have no intentionally added fluorinated chemicals and total fluorine below a set limit (100 ppm). | Check current requirements at bpiworld.org. |
| TUV Austria OK compost | Certification is based on EN 13432 (industrial) or the separate OK compost HOME scheme. | Ask the certifier or manufacturer how fluorine is addressed in the current scheme rules. |
| Japan, Korea, Singapore | Requirements differ and are updated separately. | Confirm with your importer or compliance advisor. |
The full EU regulation is published as Regulation (EU) 2025/40 on EUR-Lex. For a wider view of certificates and food contact tests, see our guide to compostability certificates and food contact tests.
How to write PFAS-free into your specification
“PFAS-free” is too vague to enforce. A useful specification has three parts.
1. A declaration covering every component
Ask the factory to confirm in writing: no intentionally added PFAS in any component or process, including pulp additives, surface coatings, films, mold release agents, inks, adhesives, labels and processing aids. Name every component that ships with your product: base, lid, liner, sleeve, label and carton if it touches food.
2. A measurable limit
A declaration covers intent. A limit covers results. Pick a threshold that matches your strictest target market, for example total fluorine below 100 ppm for BPI-aligned products, or the PPWR limits for EU food-contact packaging. State the test method and require an accredited lab (ISO/IEC 17025).
3. A performance requirement
Removing fluorine changes how the product behaves, so define what it must still do. Write pass criteria based on your real use: for example, holding oil or water at your serving temperature for a stated time with no leakage or visible seep-through on the underside. Include microwave or freezer use only if you will claim it.
Test methods: what each one tells you
Buyers often order one test and assume it answers every question. It rarely does.
| Test | What it measures | Strength | Limitation |
|---|---|---|---|
| Total fluorine (TF), usually by combustion ion chromatography (CIC) | All fluorine in the sample, organic and inorganic | Broad screen that catches PFAS the lab was not looking for; relatively affordable | Does not identify compounds; low natural background fluorine exists |
| Total organic fluorine (TOF) | Organic fluorine, with inorganic fluorine excluded | Closer proxy for PFAS than TF | Methods differ between labs, so results are not always comparable |
| Targeted PFAS analysis by LC-MS/MS | A defined list of individual PFAS at very low levels (ppb) | Specific and quantitative; matches rules written around targeted analysis | Misses PFAS not on the list, including many polymeric types |
| Food contact migration tests (FDA 21 CFR, EU or LFGB) | What migrates from packaging into food simulants | Required for food contact compliance generally | Not a PFAS test; a pass here says nothing about fluorine content |
A practical approach is total fluorine screening on every new formulation and on production lots, with a targeted panel when your market’s rules reference specific compounds or when a screen comes back higher than expected.
As an indicative range, a total fluorine screen often costs a few hundred USD per sample at an accredited lab, and a targeted panel usually costs more. That is small next to the cost of a rejected container.
PFAS-free barrier options and their trade-offs
Factories use different approaches to replace fluorinated oil repellents. Performance varies by formulation and by factory, so the table is a guide to the questions to ask, not a ranking.
| Barrier approach | Oil resistance | Compostability impact | Cost and lead time |
|---|---|---|---|
| Water sizing only (for example AKD), no oil agent | Low for hot oily food; fine for dry, cold or low-fat items | Generally minimal | Lowest cost; suits bakery, fruit and dry snacks |
| Fluorine-free oil resistance additive in the pulp | Moderate to good, drops with higher temperature and longer holding | Depends on the chemistry; confirm certificate scope | Often a modest premium over the old fluorinated version |
| Water-based barrier coating applied after forming | Good on the coated surface | Depends on the coating; confirm certificate scope | Extra process step; may add time |
| PLA or other bio-based film lamination | Very good for oil and liquids | Usually industrial compost only; affects home compost claims | Higher cost; extra MOQ and lead time for the film |
Two practical points follow. First, a certificate is generally tied to a specific material and formulation. If a factory switched from a fluorinated agent to a new additive, ask whether the certificate was updated or whether the new formulation was assessed. Second, you may not need the strongest barrier on every SKU. Plates for dry snacks do not need the same treatment as clamshells for fried chicken, and matching the barrier to the food can keep cost down.
Compostable packaging already tends to cost roughly 20 to 50% more than conventional plastic, depending on material and volume. For how barrier choice fits into the total landed cost, see what bagasse and plant-based packaging costs from Vietnam.
A verification plan that holds up
A single report from two years ago on a different product is not verification. A workable plan looks like this:
- Collect documents first. Written declaration, most recent test reports and the compostability certificate. Check that the product name, company name and date on each report match what you are buying.
- Check the lab. The report should come from an ISO/IEC 17025 accredited lab, and the method should be named.
- Test your own samples. Send pre-production samples to a lab you choose. This costs little compared with a shipment and gives you a baseline.
- Test production, not only samples. Have random pieces pulled during pre-shipment inspection and screened. Formulations can drift between sampling and mass production.
- Retest on change. Any change in additive supplier, coating, fiber source or factory should trigger a new test. Many buyers also retest at a fixed interval, for example once a year.
Ask whether the factory still runs fluorinated agents on any line for other customers. Shared pulp preparation, recycled process water and shared molds can carry traces across products. A factory that runs fully fluorine-free is simpler to verify than one that switches formulations by order.
Timing matters too. Building your own test into the sampling stage adds a week or two, so plan for it alongside the MOQ, mold and lead time steps for a first bagasse order.
Red flags in supplier answers
- The only test report covers a different product, an older formulation or another company’s name.
- The report tests only a few legacy compounds such as PFOA and PFOS. Those were phased out long ago; a clean result on them does not rule out other PFAS.
- Oil resistance claims at high temperatures with no explanation of the barrier, even under NDA.
- “PFAS-free” with no fluorine number anywhere in the paperwork.
- Reluctance to allow independent testing of production samples.
None of these proves a problem. Each is a reason to ask one more question before you place the order.
See also: PFAS limits and test methods.
How biopackvn.com fits in
We are a matching service. You describe the product, material and compliance needs, and we introduce up to 3 Vietnamese manufacturers that suit the request. You then work with them directly on samples, testing and contracts. It is free for buyers, we take no commission on orders and we sign an NDA on request before you share specifications. We reply within 24 business hours.
We do not verify or confirm that any manufacturer holds a compostability certificate (BPI, TUV Austria OK compost, ASTM D6400 or EN 13432), and we do not test for PFAS. Request the original certificate and test reports from the manufacturer and check them, for example in the certifier’s public database, before you order. Our compostable packaging materials and certifications guide covers the certification schemes in more detail.
If PFAS-free is a requirement, include it in your RFQ so we only introduce factories that say they can meet it.
Next step
For PFAS-free molded fiber, a useful RFQ includes:
- Material: bagasse or other molded fiber (natural or bleached) plus the barrier you prefer or will accept
- Item, size and volume: dimensions or capacity, with a drawing or reference photo
- Quantity per SKU: first order and expected annual volume
- Target market and certification needs: for example BPI for the US or TUV Austria OK compost for the EU, your fluorine limit and any food contact tests
- Performance and spec file: food type, serving temperature, holding time, artwork and packing requirements
Send an RFQ for PFAS-free packaging with whatever you have today; the details can be refined with the manufacturers.
Frequently asked questions
Is all bagasse packaging from Vietnam PFAS-free now?
Do not assume it. Many factories have moved to fluorine-free oil resistance agents, but formulations differ between factories and sometimes between product lines in the same factory. Ask for a written declaration and a recent test report on the exact product, and consider your own test on production samples.
What is the difference between total fluorine and targeted PFAS testing?
Total fluorine testing, often by combustion ion chromatography, measures all fluorine in the sample and catches PFAS the lab was not looking for. Targeted testing by LC-MS/MS identifies and quantifies a defined list of PFAS compounds at very low levels. The first is a broad screen and the second is specific. Regulations may reference either or both.
Does a PFAS-free coating affect compostability certification?
It can. Compostability certificates are generally tied to a specific material and formulation, including coatings and thickness. If a factory changes its barrier chemistry or adds a PLA or other bio-based film, check with the manufacturer that the certificate covers the product as it is now made.
How much does a PFAS test cost?
As an indicative range, a total fluorine screen at an accredited lab often costs a few hundred USD per sample, and a targeted PFAS panel usually costs more. Prices depend on the lab, the number of compounds and turnaround time, so request quotes from two or three labs.
Will a PFAS-free product resist hot oil as well as the old fluorinated version?
Sometimes, but not always. Fluorine-free agents and coatings vary in performance with temperature and holding time. Test samples with your actual food at your serving temperature and write the pass criteria into the specification.
BioPack VN is a matching service, not a manufacturer. Figures above are typical market ranges for planning, not quotes, and we do not confirm any manufacturer's certificates. Send an RFQ to be introduced to up to 3 Vietnamese manufacturers within 24 business hours.