Have you probably noticed that the “OK Compost” logo on a compostable bag? It is the heavy hitter of environmental standards. It’s not just a sticker you buy; it’s a rigorous, scientifically-backed stamp of approval that tells consumers your product won’t just sit in a landfill for several centuries.
In this guide, we’ll dive in the TÜV Austria certification, two certification type (OK Compost INDUSTRIAL and OK Compost HOME), and steps to get this certification.
What is OK Compost Certification?
At its core, OK Compost Certification is a guarantee issued by the TÜV Austria Group. TÜV Austria has over 150 years of history and was testing steam boilers and industrial safety. Today, they are one of the strictest and most authoritative independent testing bodies.
When it comes to compostable plastics, they are essentially the Supreme Court. Their “OK Compost” mark is the most recognized trust signal in Europe and is rapidly becoming the global benchmark. When a product carries this label, it means this material will safely return to the earth without leaving toxic footprints behind.
OK Compost Certification Type
OK Compost certification is split into 2 main categories:
- OK Compost INDUSTRIAL
This certification ensures that the product will biodegrade in an industrial composting facility. Industrial facilities are like the “beast mode” of composting. They reach high temperatures (between 55 to 60℃), have controlled moisture levels, and are packed with microbes.
In the industrial environment, the product must disintegrate within 12 weeks and fully biodegrade (turn into CO2 and water) within six months.
- OK Compost HOME
OK Compost HOME means the product will break down under the home composting condition. Unlike industrial facilities, backyard compost piles have the lower temperatures, affecting the activity of microorganisms. So to pass this certification, the material has to be thinner or more sensitive to degradation.
| Certification Type | Degradation Environment | Applicable Products |
| OK Compost INDUSTRIAL | Industrial composting facilities (controlled humidity, temp ~58℃) | Coffee cups, takeout containers, shipping mailers |
| OK Compost HOME | Backyard compost bins (~28℃, fluctuating conditions) | Food waste bags, food wrap covers, grocery bags |
Why are Businesses Rushing to Get Certified?
Although it is hard and expensive to get a OK Compost Certification, why is there a line out the door at TÜV Austria? Because the “Green Wave” is no longer a trend—it’s a survival requirement.
Global Market Access
If you want to sell into the European Union, the OK Compost Certification is basically your passport. Many EU countries are cracking down on single-use plastics. Having this certification allows you to bypass many of the bans and taxes levied against traditional plastics.
Prevention of Greenwashing
Consumers have been “burned” before. They’ve bought bags labeled “degradable” only to find out they were just regular plastic with an additive that creates microplastics. The TÜV mark provides scientific proof. It ends the argument. When you show that logo, you’re telling the customer, “We did the work. We aren’t lying.”
Legal Compliance
The EU Green Deal and various regulations are moving toward a circular economy. Eventually, compostable packaging will be the law for certain industries. Getting certified now means you won’t be scrambling when the regulations inevitably tighten.
Brand Trust and Premium Pricing
OK Compost certified products can be charged more because they have better performance and sustainable for the environment. A distributor who can offer certified bags can win the contract with the high-end organic supermarket chain.
How to Get OK Compost Certified?
If you are ready to take the plunge, here’s how the process actually looks.
- Prepare of the “Technical File”: You need to gather every single details about your product. What’s the material? Who is the supplier? What inks are you using for the logo?
- Preliminary Screening: TÜV Austria will look at your data firstly. If they see a red flag (like a known toxic additive), they’ll tell you before you immediately. This saves you from washing thousands of dollars on tests you are guaranteed to fail.
- Laboratory Testing: This is the longest part (usually 4–6 months). Your product goes to a lab where they check:
- Biodegradability: Does it break down chemically within 180 days?
- Disintegration: Does it physically fall apart into smaller fragments (under 2mm) within 12 weeks?
- Ecotoxicity: Do plant still grow in the soil after the bag has decomposted?
- Heavy Metals: Check whether the final compost contains lead, arsenic, and mercury.
- Final Assessment: TÜV Austria reviews the lab reports. If everything is green, they issue your certificate.
- Market Monitoring: You get the right to use the logo, but you’re still under a microscope. TÜV can do spot checks at any time to make sure you didn’t change the formula to a cheaper, non-compostable version later on.
The “Hidden” Fail Point: Inks, Glues, and Additives
I’ve seen dozens of companies fail because of one tiny mistake. They have a perfect, cornstarch-based bag, but they use a cheap, petroleum-based ink for the printing.
TÜV tests the entire finished product.
- Printing Inks: If the ink leaves behind toxic residue, the certificate is denied.
- Adhesives: The glue used to seal a mailer must be as compostable as the film itself.
- Additives: Even a tiny amount of “slip agent” or colorant must be scrutinized.
How to Verify a TÜV Austria Certificate?
Here is a bit of “insider info” for the distributors out there. Because OK Compost certification is so valuable, there are fake.
If a supplier hands you a PDF, don’t just take their word for it.
- Go to the Source: Go to the official TÜV Austria Certificate Check online.
- Check the Number: Every certificate has a unique “S number”. You can plug that into the database to see if it’s active.
- Check the Scope: Does the certificate cover the specific product you are buying? Sometimes a supplier has a certificate for a thin bag but tries to use it for a thick one.
- Watch the Expiry Date: Certificates aren’t forever and need to be renewed. Always check the one you’re looking at is still valid.
FAQs
Is the OK Compost certification recognized in the USA or Asia?
Yes. In the USA, the standard is usually ASTM D6400. However, because the OK Compost standards are almost identical, most US companies highly respect the TÜV mark. In Asia, particularly in markets like China and South Korea, it is considered the “gold standard” for export-quality products.
What are the benefits of OK Compost certification?
Beyond just “helping the planet,” there are three major business perks:
- Reduced Liability: If a customer’s composting facility gets contaminated and they trace it back to your “fake” compostable bag, you are in huge legal trouble.
- Operational Efficiency: The process of getting certified forces you to clean up your supply chain. You’ll know exactly where every gram of your material comes from.
- Lower Taxes: In places like the UK and Italy, there are “Plastic Taxes.” Certified compostable materials are often exempt from these costs.
Does “OK Compost” mean it will break down in the ocean?
No. OK Compost refers to soil-based composting. The ocean is cold and lacks the same microorganisms. If you want a product that breaks down in water, you would need the OK Marine certification.
Conclusion
The OK Compost Certification isn’t just a hurdle to jump over; it’s an investment in your brand’s reputation. Whether you’re selling OK Compost certified products to local cafes or shipping millions of bags globally, that little logo says more about your commitment to quality than any sales pitch ever could.
So, is your business ready? If you start today, you could be the most trusted supplier in your region by this time next year. Don’t wait for the regulations to catch up to you—get ahead of them.