Compostable is a more specific claim than biodegradable. Biodegradable describes biological breakdown under stated conditions and over time, but the word alone does not tell a buyer where an item should go. A compostable claim should identify the composting environment and be supported for the finished product. Not every biodegradable product is compostable, and a commercially compostable product is not automatically suitable for a home compost pile.
Compostable vs Biodegradable at a Glance
| Question | Compostable | Biodegradable |
|---|---|---|
| What does the claim describe? | Breakdown in a defined composting process into usable compost without unacceptable effects under the applicable criteria. | Breakdown through biological activity under specified environmental conditions and over a stated period. |
| Does the word identify a disposal route? | Only when the label states home or commercial/industrial composting and the receiving program accepts the item. | No. The term alone does not tell the user to use a compost, recycling or trash bin. |
| What evidence should a buyer request? | Finished-product test or certification scope, applicable standard, certifier or laboratory, product or SKU match, and composting environment. | Test method, environment, time frame, extent of breakdown, finished-product scope and the disposal context represented by the claim. |
| Does plant-based mean the same thing? | No. Feedstock does not prove compostability. | No. Biobased and biodegradable describe different attributes. |
| Can it go in conventional plastic recycling? | Not unless the local recycling program specifically instructs that it can. | Not based on a biodegradable claim alone. |
Why the Terms Are Not Interchangeable
Biodegradation depends on organisms, temperature, moisture, oxygen, material thickness, formulation and time. A statement that something "biodegrades" is incomplete when those conditions and the expected outcome are missing. Partial fragmentation or a plant-derived feedstock is not, by itself, proof of a useful disposal outcome.
Composting is a managed biological process. A compostable claim adds performance requirements tied to an intended composting environment. For plastics and plastic-containing products intended for aerobic municipal or industrial facilities, ASTM D6400 is one relevant specification. Other products, components and markets may use different standards or certification routes.
Buyer rule: do not approve either word by itself. Match the claim to the finished product, evidence, conditions, time frame and the waste system that will actually receive the item.
Commercial Composting Is Not Home Composting
Commercial or industrial composting
Managed facilities control temperature, moisture, aeration, residence time and feedstock. A product intended for this route still needs acceptance from the local collector and facility; a label or certification mark does not guarantee universal access.
Home composting
Backyard systems generally operate under different and less consistent conditions. Do not treat an industrial compostability claim as a home-composting claim. Look for evidence that specifically covers home conditions.
Read the compostable certification guide for the difference between ASTM D6400, BPI, EN 13432 and OK compost programs. For material-specific decisions, use the compostable tableware material guide. Return to the compostable tableware resource center when you need food-contact, disposal or purchasing guidance beyond these two terms.
How to Check a Product Label or Listing
- Identify the exact item. Record the product name, SKU, size, color, thickness, material, coating, liner, lid, label and bundled accessories.
- Separate the claims. Treat compostable, biodegradable, biobased, recyclable, PFAS-free, BPA-free and food-contact wording as different questions.
- Find the conditions. Look for home, commercial or industrial composting; soil, water or another environment; and any stated temperature or time frame.
- Check the evidence scope. Confirm whether documentation covers the finished product or only a resin, fiber, coating or component.
- Verify the listing. When certification is claimed, match the certificate holder, product description and SKU in the current certifier directory where available.
- Confirm local acceptance. Ask the collector or facility whether it accepts that item category and certification.
Buying Checks by Product Type
| Product type | Questions to ask | Useful next page |
|---|---|---|
| Plates and bowls | Does the claim cover the molded fiber, surface treatment, print, color and finished format? Has the item been tested with the actual food and hold time? | Compostable plates |
| Cups and lids | Are the cup, liner, ink, seam and lid covered together or separately? Is the cup intended for hot or cold service? | Compostable cups |
| Takeout packaging | Does the finished clamshell or container, including coating and closure, match the evidence? Does the facility accept food-soiled packaging? | Compostable packaging |
| Cutlery | Is it wood, bamboo, PLA, CPLA or a composite? Check the exact formulation, wrapper, temperature instructions and finished-product claim. | Compostable cutlery |
| Compostable bags | Do size, thickness, color, closure and intended use match the listed product or certified range? Does the organics program accept bags? | Compostable trash bags |
Examples of Claims to Verify in the ECO-Lipak Catalog
The catalog currently includes sugarcane plates labeled with BPI Certified, PFAS-Free and BPA-Free wording, clear cold cups labeled with BPI Certified and PFAS-Free wording, and compostable trash bags labeled with BPI Certified and OK Compost wording. These links are product-selection starting points. When a claim is material to approval, request evidence that matches the exact variant or SKU and confirm the intended disposal route.
What to Do After Use
- Read the item and packaging instructions instead of sorting by appearance.
- Check whether the local organics program accepts foodservice items, compostable plastics and certified bags.
- Remove components that the program does not accept when separation is practical.
- Do not put compostable plastic into conventional plastic recycling unless the program specifically directs you to do so.
- If no accepted composting route is available, follow local waste guidance rather than using a vague biodegradable claim as a bin instruction.
A Procurement Workflow for Businesses
1. Define
List the food, temperature, service time, transport, pack quantity, component set and waste system.
2. Document
Keep the product specification, certificate or test evidence, certifier listing and approved claim together.
3. Test
Use the real menu, equipment, storage, stacking, delivery movement and expected hold time.
4. Recheck
Review the evidence again when the supplier, factory, formulation, color, coating, label or SKU changes.
Common Wording Mistakes to Avoid
- "Made from plants, so it is biodegradable." Feedstock and end-of-life performance are separate attributes. Ask how the finished item was evaluated.
- "Biodegradable anywhere." Breakdown depends on a defined environment and time. Avoid language that implies rapid disappearance in soil, water, litter or landfill without evidence for that setting.
- "Compostable" without the environment. State whether the evidence covers commercial or industrial composting, home composting, or another defined route.
- Applying one certificate to a whole catalog. Certification is scope-specific. Match the certificate holder, product family, SKU, size, color and relevant components.
- Using a logo as the entire explanation. A mark does not replace clear buyer information. Explain the verified benefit, intended composting environment and any local-availability limitation.
- Calling landfill a biodegradation plan. Customary disposal conditions may not provide the environment represented by a laboratory or composting claim. Give a realistic local disposal instruction instead.
Frequently Asked Questions
Are all compostable products biodegradable?
A compostable product undergoes biological breakdown under the conditions covered by its claim, so compostability includes a biodegradation component. The reverse is not true: a product described as biodegradable may not satisfy compostability requirements or produce usable compost under a defined composting process.
Does biodegradable mean an item can go in a compost bin?
No. "Biodegradable" alone is not a compost-bin instruction. Check whether the finished item has an appropriate compostability claim and whether the local program accepts it.
Does compostable mean home compostable?
No. Many compostable plastics are intended for commercial or industrial facilities. Use a home-composting claim only when the exact finished product has evidence for that environment.
Does plant-based mean biodegradable or compostable?
No. Plant-based or biobased describes material origin. Performance and disposal depend on the finished product, its formulation and the conditions covered by the evidence.
Can compostable plastic go in the recycling bin?
Not unless the local recycling program explicitly accepts it. Compostable plastics can disrupt conventional plastic recycling when the streams are mixed.
What should a buyer request before approving a large order?
Request the exact SKU and product specification, applicable standard or test method, current certificate or directory listing when certification is claimed, covered components, composting environment and local acceptance information. Test a sample in the real service workflow before scaling.
Primary References
- U.S. Federal Trade Commission - Environmental Claims: Summary of the Green Guides
- U.S. Environmental Protection Agency - Plastic Recycling and Composting FAQ
- ASTM International - ASTM D6400-26
Match the claim to the product and disposal route
Use the certification and material guides to verify the exact item, then compare current tableware and packaging formats.
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