The Truth About Biodegradable vs. Compostable : A Buyer’s Guide

If your brand team asks for "biodegradable packaging," your job isn't to nod and place an order. Your job is to make sure that claim won't get your product flagged, rejected by a waste hauler, or roasted by a sustainability reviewer who actually reads standards.

Here's the straight talk: "biodegradable" is a vague promise. "compostable" is a performance claim tied to specific test conditions. If you don't know which end-of-life system your customer actually has access to-industrial composting, home composting, recycling, landfill-then you're buying a label, not a solution.

 

 

 

"Biodegradable" (why buyers get burned)

Biodegradable simply means a material can break down through biological activity-eventually, somewhere, under some set of conditions. That's exactly why the term gets abused.

In the U.S., the FTC's Green Guides make the risk clear: an unqualified degradable/biodegradable claim is only appropriate if you can prove the entire product breaks down and returns to nature within a "reasonably short period of time," defined as one year. The FTC also notes that items destined for landfills, incinerators, or recycling facilities won't degrade within a year, so unqualified biodegradable claims for those items shouldn't be made.

That's the trap. Most packaging ends up in landfill or incineration streams. So "biodegradable" on its own often creates legal exposure and reputational risk, not sustainability value.

"Compostable" (a stricter claim)

Compostable means the material breaks down into usable compost safely and in about the same time as the materials it's composted with-and you need competent and reliable scientific evidence to say that. The FTC also says compostable claims should be qualified if the product can't be composted at home or if composting facilities aren't available to a substantial majority of consumers.

So compostable isn't about what the material is "made from." It's about what it does in a defined composting environment.

 

 

 

 

This is where most purchasing specs fall apart.

Industrial compostable (EN 13432 / ASTM path)

Industrial composting facilities run controlled conditions-higher, stable temperatures and managed aeration. In Europe, EN 13432 is the reference standard for industrial compostability of packaging. It requires disintegration (commonly referenced as after 12 weeks) and biodegradation (commonly referenced as complete biodegradation after six months, with 90% or more converted to CO₂) under industrial composting conditions.

In North America, the most recognized third-party verification is BPI certification. BPI's commercial certification uses ASTM D6400 as the base standard (with additional ASTM pathways depending on product type), and BPI maintains an online product database so buyers and composters can verify certification status.

Translation for buyers: if you want the "commercial compostable" claim to hold up in the U.S. or Canada, BPI-certified packaging is the safest shorthand-because composting facilities recognize it and you can independently verify it.

Home compostable (NF T 51-800 / ambient-temperature reality)

Home composting is colder, inconsistent, and heavily dependent on the homeowner's habits. Testing is designed to reflect that.

Home compostability schemes often reference NF T 51-800 (France) and/or AS 5810 (Australia). In one widely used certification framework, home compostable criteria include:

Disintegration at ambient temperatures within 180 days, with no more than 10% remaining above a 2 mm sieve, and

Ultimate biodegradation (commonly 90%) within a longer time window (often within 12 months) at ambient temperatures.

And here's a practical point you can use in internal meetings: industrial compostable does not automatically mean home compostable, because the test conditions are fundamentally different (industrial ~58°C is often referenced; home composting tests can be around 25°C and take longer).

 

 

 

 

 

Trap #1: "Biodegradable" with no timeframe, no conditions, no proof

If the claim doesn't specify where it biodegrades and how quickly, it's usually marketing. You don't want your packaging program riding on a word the FTC warns is easily misleading.

Buyer move: demand the standard and the test report reference (ASTM / EN / NF). If they can't provide it, treat the claim as unsupported.

Trap #2: "Compostable" without a recognized third-party certification

A real compostable claim should be backed by a credible certifier and a traceable certificate number. The FTC also cautions that seals and certifications can imply broad environmental benefits if the basis isn't clear.

Buyer move: require:

certifier name (not just a logo)

certificate number

scope (which SKUs, which materials)

validity dates

and a linkable listing (where available)

Trap #3: Fake logos and lookalike certificates

This is more common than people admit-especially on marketplaces and with smaller brokers. If the "certificate" is a generic PDF with no searchable record, you're exposed.

Buyer move: use the certifier's database. For BPI specifically, the program includes a searchable online product catalog for verification.

Trap #4: The PFAS / fluorine problem (especially in food-contact items)

Many buyers care about grease resistance. Some suppliers solve it the wrong way.

BPI has a fluorinated chemicals policy that, among other requirements, prohibits intentionally-added fluorinated chemicals and requires test documentation (including a threshold for total organic fluorine) for products claiming BPI certification.

Buyer move: even if you're not chasing BPI, ask for:

confirmation of no intentionally added fluorinated chemicals (where applicable)

relevant lab screening (especially for food service items)

 

 

 

 

Bagasse packaging can be a smart choice because it's fiber-based and made from a byproduct stream (sugarcane residue). But buyers still need to spec it like professionals.

Bagasse is not automatically compostable once you add coatings, liners, inks, or performance treatments. The product's real-world behavior depends on the final build.

Bagasse tends to work well for:

hot and cold food service

takeout, catering, stadiums, events

brands that want a fiber look without plastic shine

Bagasse needs careful evaluation for:

long shelf-life moisture exposure

freezer-to-microwave edge cases

heavy oil/acid foods over extended time

laminated barrier structures that turn a fiber item into a mixed-material headache

If you're reviewing molded fiber options, start here: Bagasse Tableware

 

 

 

 

 

You asked for Pack-Rich's sugarcane pulp product test data. I'm not going to throw random numbers at you-buyers hate that, and it's how misinformation spreads. What I can do is show you what test evidence should include, and how we structure it so a procurement or compliance team can actually use it.

Pack-Rich is a source factory (no middleman), established in 2009, operating an 8,000 sqm facility with 100+ employees and annual capacity of roughly 7 million pieces. We hold ISO9001, SGS, FSC, and CE, and we supply global brands like Gucci, Ferrari, MaxMara, and BOTTEGA-which means our documentation and QC discipline has to stand up to real scrutiny.

Our buyer-facing testing package typically covers three buckets

A) Compostability / degradation evidence (when the spec requires it)

A serious report references:

the standard (ASTM / EN / NF)

the test lab and accreditation

sample identification (SKU, batch, date)

clear pass/fail criteria and results

photos or observation logs (disintegration is visual and measurable)

B) Food-contact and chemical screening (market-dependent)

This is where buyers reduce risk:

migration and material safety testing (per target market requirements)

screening aligned to customer policies (for example, fluorine/PFAS risk screening where relevant)

C) Performance testing procurement actually cares about

Because "eco" packaging that fails in use gets replaced with something worse:

oil resistance, leak resistance

heat tolerance (hot fill, microwave guidance)

cold tolerance (refrigeration and short freezer cycles)

compression/stacking for shipping cartons

The ISO9001 part buyers don't see-but should ask about

An ISO9001 packaging manufacturer should be able to show that test results and approved samples translate into daily production controls:

incoming material checks

in-process inspection

final inspection tied to packing and shipment release

That's how you prevent the classic disaster: the first sample set looks great, then bulk production quietly drifts.

 

 

 

 

 

If you take one thing from this guide, make it this:

Choose the end-of-life claim first. Then choose the packaging.

Use this quick checklist in supplier conversations:

Are we targeting industrial compost or home compost?

What standard applies in our market (EN 13432 / ASTM / NF)?

Do we need BPI certified packaging for U.S./Canada programs?

Can the supplier provide a traceable third-party certificate and database verification where available?

Are claims qualified properly based on facility availability (FTC Green Guides logic)?

What additives/coatings are used, and do they introduce fluorinated chemical risk where applicable?

 

 

 

 

 

 

"Biodegradable" is easy to print on a box. Defensible compostable claims are harder-because they require standards, testing, and honest labeling based on real disposal conditions.
If you're sourcing molded fiber and want specs that won't fall apart under review, start with our sugarcane pulp line here: Bagasse Tableware. Share your target market (EU/US), the disposal route your customer uses (industrial compost vs home compost), and your performance requirements (oil, heat, leak). We'll respond with a compliance-ready spec path instead of vague green language.