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Certification scheme for wood packing material

According to the Danish Wood Packaging Materials Treatment and Marking Scheme.

Effective from November 2003, the Danish Agricultural Agency has established a Wood Packaging Materials Treatment and Marking Scheme, based upon requirements as set out in the International Standards on Phytosanitary Measures No. 15: ’Regulation of Wood Packaging Materials in International Trade’, FAO, (as most recently revised in 2013) (ISPM-15 henceforward).

The Danish Wood Packaging Materials Treatment and Marking Scheme is regulated through a governmental Order (the most recent being no. 1122 of 20 September 2013) and further detailed in company guidelines (latest version January 2014) issued by the Danish Agricultural Agency.

To obtain certification, Danish companies wishing to use the internationally recognised and protected mark must be approved by the Danish Agricultural Agency, being the sole National Plant Protection Organization of Denmark.


Only certified companies may use the Danish version of the protected mark outlined in ISPM-15, Annex 2, on wood packaging materials. As from July 2009, the Danish mark has the following design:

Danish mark after 1 July 2009

ISPM 15 stempel på behandlet træ


In this mark, XXXX represents the unique four-digit registration number assigned by the Danish Agricultural Agency to the actual certified company applying the mark. The complete mark should be at least 50 mm by 50 mm (where wood dimensions allow), be permanent and visible on at least two sides of the unit, and red and orange colours avoided.

The treatment code ’HT’ (or 'DH' or ´MB’) must appear after the combined country and producer codes. It must appear on a separate line or be separated by a hyphen if presented on the same line as the other codes. 

Prior to the 2009-revision of ISPM-15, the approved Danish mark included the code ‘DB’ (for debarked) and the codes order was as follows:

Danish mark prior to 1 July 2009

ISPM 15 stempel på behandlet træ (før 1. juli 2009)


Note that according to ISPM-15, countries should at import accept previously produced wood packaging material carrying a mark consistent with earlier version of ISPM-15.

Company categories

Certification may be granted to:

A. Companies carrying out heat treatment (by conventional or dielectric heating)of wood (including finished packaging materials) 

B. Companies manufacturing, repairing or remanufacturing) wood packaging materials from treated wood. 

Requirements for company certification

Companies must have established a detailed internal quality assurance system, basically ensuring:

  • for category A, that all pieces of wood to be marked have been debarked and heat treated, reaching a core temperature of
    - for conventional heating:  at least 56oC for at least 30 minutes;
    - for dielectric heating: At least 60oC for at least 1 minute: that treated wood is nowhere mixed with untreated wood; and that consignments of treated wood are documented  in accordance with Danish requirements.

  • for category B: that all pieces of wood used for wood packaging materials to be marked has been debarked and heat treated as required (or alternatively: treated outside of Denmark with methyl bromide in accordance with ISPM-15), that treated wood is nowhere mixed with untreated wood, and that each unit of packaging materials is marked with the Danish mark as required.

The Company Guidelines issued by the Danish Agricultural Agency specify procedures that must be outlined in the quality assurance system, including procedures for:


  • debarking
  • calibration of temperature loggers and settings
  • stacking of wood in drying room / kiln
  • early identification and handling of treatment failures
  • marking of wood or finished packing materials 
  • ensuring the of treated wood only
  • segregation of treated and untreated wood
  • repair and remanufacture, in accordance with ISPM-15
  • treatment specifications on in- and outgoing trading documents
  • instruction of employees.

Audit and certification by the Danish Agricultural Agency
Having approved the written quality assurance system documentation and physically audited the company’s working practice the Danish Agricultural Agency issues a certificate including the unique company registration number. The certificate is valid for one year and may be renewed after another audit.

Here you can find an updated list of certified companies

Wood packaging materials 

Complementary to the regular audits, the the Danish Agricultural Agency carries out unannounced inspections with selected companies under the certification scheme. The certification of a company is denied or withdrawn in case of non-compliance.

In conclusion, the Danish Wood Packaging Materials Treatment and Marking Scheme ensures that wood packaging materials marked with the internationally recognised and protected mark have been constructed of debarked wood treated in compliance with all provisions of ISPM-15.