DATA & CERTIFICATIONS

Trust you can check against the source.

Test results and certificates are gathered in one place. Each item is shown with its testing institute, test method, report number and data as-of date, and the original can be viewed.

The limits table by country and certification on p.4 of the catalog may have varying scopes depending on the country and product group, and requires checking the latest original text, so figures are not transcribed or interpreted in this site text. You can check the original text on page 4 of the original catalog below, and please verify the actual application standards by checking the latest original text of each regulation.

Company names follow the anonymized labels used in the catalogue. We do not speculate about the actual company names.

Company M appears under both chemical indigo and plant indigo. It is labelled with its type so the two can be told apart.

These values are a comparison of the nine samples included in the catalogue and are not statistics representing the market as a whole. The carbon test and the aniline test differ in institute, method and date, so they have not been combined into a single indicator.

Biobased carbon (C14)

This is the result of measuring the biobased (renewable) carbon ratio of commercially available indigo dye. This value is the biobased carbon content, not the purity of indigo or a reduction rate of carbon emissions.

Testing institute
KATRI (Korea Apparel Testing and Research Institute)
Test method
ASTM D6866-24a Method B (AMS)
Biobased carbon (C14)
SamplepMCBiobased carbon content (%)Test report numberTest report date
Company SChemical1.071SBED25-00000153-12025-05-22
Company MChemical19.2019SBED25-000002112025-07-11
Company ZChemical0.300SBED25-000002112025-07-11
Company MPlant100.39100SBED25-000002112025-07-11
Company XTPlant51.1551SBED25-000002112025-07-11
Company IPlant18.3418SBED25-000002112025-07-11
Company XBPlant96.8297SBED25-000002112025-07-11
Company HPlant33.6634SBED25-00000153-12025-07-11
CutisBioBio97.7398SBED25-00000153-12025-05-22

Source: Catalogue p.3 Table 1-1 · Data as of 2026-09-06

Company Z's biobased carbon content is printed as 0 (pMC 0.30) in catalogue Table 1-1 and as N.D. in Figure 1-3. This table reproduces the Table 1-1 value.

The test report number SBED25-00000153-1 is listed twice in Catalog Table 1-1 with different issue dates. The original listing has been transcribed as is.

Aniline and N-methylaniline analysis

Results of analyzing the aniline and N-methylaniline remaining in commercial indigo dyes.

Testing institute
KOTERI (Korea High Tech Textile Research Institute)
Test method
KS K 0734 2019
Method detection limit
5 mg/kg
Aniline and N-methylaniline analysis
SampleAniline (mg/kg)N-methylaniline (mg/kg)Test report numberTest report date
Company SChemical1,5248282025-0604-1132-C032025-06-10
Company MChemical3692252025-0624-12682025-07-03
Company ZChemical1,2291,1272025-0624-12682025-07-03
Company MPlantNot detectedNot detected2025-0624-12682025-07-03
Company XTPlant131852025-0624-12682025-07-03
Company IPlantNot detectedNot detected2025-0624-12682025-07-03
Company XBPlantNot detectedNot detected2025-0624-12682025-07-03
Company HPlant2,6522,3752025-0604-1132-C032025-06-10
CutisBioBioNot detectedNot detected2025-0604-1132-C032025-06-10

Source: Catalogue p.5 Table 2-3 · Data as of 2026-09-06

Not detected (N.D.) means below the method detection limit under the stated test method. It is not a measured value of 0, and it is not shown as a zero bar in the charts.

Biobased carbon content comparison (%) — Catalogue p.3

Source: Catalogue p.3 Figure 1-3

Biobased carbon (C14) — Catalogue p.3 Table 1-1

Source: Catalogue p.3 Table 1-1

Aniline and N-methylaniline analysis — Catalogue p.5

Source: Catalogue p.5 Figure 2-2 · Table 2-3

Global certifications

The certificates included in the provided catalog. You can enlarge the original certificates for each item.

  • ZDHC MRSL Level 1 Version 3.1 certification mark

    ZDHC MRSL Level 1 Version 3.1

    • Within the validity period stated in the document
    • Certification material included in the July 2026 catalogue
    Certificate number
    H682-25-00154
    Certification body
    FITI Testing & Research Institute
    Covered product
    CB Bio Indigo Dye Powder
    Catalogue page
    10

    Original image of the ZDHC MRSL Level 1 Version 3.1 certificate

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    The scope covers the chemical formulation named on the certificate (CB Bio Indigo Dye Powder). The use category is Natural dyes (1.7.27).

  • OEKO-TEX® ECO PASSPORT certification mark

    OEKO-TEX® ECO PASSPORT

    • Within the validity period stated in the document
    • Certification material included in the July 2026 catalogue
    Certificate number
    E2AGHSST4
    Certification body
    Centexbel (OEKO-TEX® Service GmbH)
    Covered product
    See attached enclosure — Product category 2.9 Natural dyes
    Catalogue page
    10

    Original image of the OEKO-TEX® ECO PASSPORT certificate

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    The product list is in the enclosure to the certificate and is not included in the catalogue. The product class is 2.9 Natural dyes. Until the enclosure has been checked, we do not specify the range of covered products.

  • USDA BioPreferred® certification mark

    USDA BioPreferred®

    • No expiry date is stated in the document
    • Certification material included in the July 2026 catalogue
    Certificate number
    4295FD7FF6695D3B1D293DB7DDEE34A5
    Certification body
    U.S. Department of Agriculture — Rural Development
    Covered product
    CB Bio Indigo Dye Powder
    Catalogue page
    11

    Original image of the USDA BioPreferred® certificate

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    A participation certificate confirming that the USDA Certified Biobased Product Label was obtained; the label states 98%. Catalogue p.11 footnotes the precision of this result as ±3% (absolute).

  • TÜV AUSTRIA OK biobased — Class 5 certification mark

    TÜV AUSTRIA OK biobased — Class 5

    • Within the validity period stated in the document
    • Certification material included in the July 2026 catalogue
    Certificate number
    TA8072609668
    Certification body
    TÜV AUSTRIA GMBH
    Covered product
    CB Bio Indigo Dye Powder (Colour: indigo)
    Catalogue page
    11

    Original image of the TÜV AUSTRIA OK biobased — Class 5 certificate

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    Class 5 means a biobased carbon content of 97% or more and up to 100%. The certificate cites method EN 16640 and certification scheme OK 20 edition D.

We have confirmed the dates written in the documents; this is not a check of current certification status in the certification body's database.

The product name on the certificates is “CB Bio Indigo Dye Powder”. Blugene is the new brand name for the CutisBio bio indigo business, which includes this product, and the product names in the certificate images have not been changed.

The certification scope is limited to the product named on each certificate. It does not mean that digital printing ink or finished denim garments are automatically certified.

Data as of
2026-09-06
Recommended date for the next certification status check
2026-10-31
Request the latest certification documents

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