Natto BIO organic certification

Last updated: May 2026

⚠️ Are you taking anticoagulant medication (e.g. acenocoumarol, warfarin)? Natto is the richest natural source of vitamin K, which may reduce the effect of these drugs. Consult your doctor about your diet. See the important legal and medical information.

Every product marked on our label as “BIO” is backed by two documents: a current certificate issued by AGRO BIO TEST Sp. z o.o. and the accreditation of that body by the Polish Centre for Accreditation. In May 2026 our Zielona Góra manufactory passed its audit successfully for the tenth time in a row, counting from the first certification in 2016.

What does a certificate backed by PCA accreditation mean?

The company Ton Color Marek Kołodziejski operates in accordance with Article 35(1) of Regulation (EU) 2018/848. The inspecting body holds Accreditation Certificate No. AC 096 and works in accordance with the standard PN-EN ISO/IEC 17065:2013-03.

In practice this means four things for the customer:

• the certifying body has technical competence confirmed by the PCA
• the inspection is independent of the producer
• the raw materials are free of pesticides, and the processing does not use GMO
• every batch of product is traceable from raw material to finished packaging

Details of the current documentation

Full list of certified BIO products

The current certificate covers products made in our Zielona Góra manufactory. In accordance with the annex to the document (Part II, point II.1), the following items hold Organic status:

Certificate renewal for the 2026-2027 period

On 5 May 2026, after a control audit carried out by AGRO BIO TEST Sp. z o.o., the certificate of compliance with Regulation (EU) 2018/848 was renewed for the period from 30 April 2026 to 30 April 2027.

We obtained our first certification in 2016. Since then, every year, an independent body accredited by the Polish Centre for Accreditation verifies that our processes comply with EU organic farming standards. This year’s renewal is the tenth in a row.

What exactly does the annual inspection cover?

• Every new product must be formally added to the certificate before it is introduced to the range.
• Every raw-material supplier must present their own current organic certificate.
• Every production batch is documented in a way that allows full traceability.
• The manufactory is subject to annual inspection covering process cleanliness, separation of organic from conventional raw materials, and control of cross-contamination.

Transparency as a principle

As an engineer, I trust data that can be checked. The documentation above confirms traceability and the absence of GMO at every stage of production. Every customer can verify the authenticity of the certificate themselves in the official TRACES register of the European Commission by clicking the button below.

🔍 Open the current 2026/2027 certificate (EU TRACES database)

About the author

Marek Kołodziejski, M.Sc. Eng., founder and creator of the Natto.pl manufactory, an engineer leading research and development work on the fermentation and drying of natto.

Author of the low-temperature convection drying technology that protects vitamin K2 MK-7, nattokinase and live bacterial cultures.

Winner of the Economic Award of the Marshal of the Lubuskie Region (2024, Innovative Micro-enterprise category) for research work and the production of fresh and dried natto as a functional food.