International Standards For Phytosanitary Measures No. 15 (ISPM 15) is an International Phytosanitary Measure developed by the International Plant Protection Convention (IPPC) that directly addresses the need to treat wood materials of a thickness greater than 6mm, used to ship products between countries. Its main purpose is to prevent the international transport and spread of disease and insects that could negatively affect plants or ecosystems. ISPM 15 affects all wood packaging material (pallets, crates, dunnage, etc.) and requires that they be debarked and then heat treated or fumigated with methyl bromide, and stamped or branded [1] with a mark of compliance. This mark of compliance is colloquially known as the "wheat stamp". Products exempt from the ISPM 15 are made from an alternative material, like paper, plastic or wood panel products (i.e. OSB, hardboard, and plywood).
The Revision of ISPM No. 15 (2009) under Annex 1, [2] requires that wood used to manufacture ISPM 15 compliant Wood Packaging must be made from debarked wood [3] not to be confused with bark free wood. ISPM 15 was updated to adopt the bark restriction regulations proposed by the European Union in 2009. Australia held out for approximately one year with more stringent bark restrictions before conforming July 1, 2010 [4]
Wood packaging materials must be debarked prior to being heat treated or fumigated to meet ISPM 15 regulations. The debarking component of the regulation is to prevent the re-infestation of insects while lumber is sitting to be manufactured, or even after it has been manufactured. The official definition for debarked lumber according to the ISPM 15 Revision (2009) is:
"Irrespective of the type of treatment applied, wood packaging material must be made of debarked wood. For this standard, any number of visually separate and clearly distinct small pieces of bark may remain if they are: - less than 3 cm in width (regardless of the length) or - greater than 3 cm in width, with the total surface area of an individual piece of bark less than 50 square cm."
The post-treatment levels of infestation (with and without bark) compared with pre-treatment levels are as follows. Overall, from the studies presented there is either: a) no significant difference between infestation levels of treated and untreated wood; or b) differences identified are related to the species of insect which may prefer treated or untreated wood. Supporting information from a North American study (IFQRG 2005-27) is summarized in the table below [5] Data are numbers of beetles per cm2:
| Bark Size | Bark beetle (Control) | Bark Beetle (HT) | Bark Borer (Control) | Bark Borer (HT) |
|---|---|---|---|---|
| 25 cm2 | 0.01 | 0.0035 | 0.0133 | 0.0064 |
| 100 cm2 | 0.005 | 0.01 | 0.0086 | 0.015 |
| 100% Coverage | 0.0087 | 0.012 | 0.0118 | 0.0137 |
The ISPM 15 compliant stamp may include further information as producers and suppliers may choose to include additional information for identification purposes.
Under ISPM 15, wood packaging used as dunnage may be marked differently from standard wood packaging materials such as pallets or crates. While both types of material must receive an approved phytosanitary treatment, ISPM 15 permits treated dunnage to bear a distinct dunnage mark. This mark uses the same basic components as a standard ISPM 15 stamp (country code, producer or treatment provider code, and treatment identifier), but may include the optional designation “DUN” to indicate that the material is intended specifically for use as dunnage. The dunnage mark does not change the required treatment; it simply identifies the wood as loose blocking and bracing rather than a manufactured packaging unit. [2]
Receiving a “DUN” designation does not alter the phytosanitary treatment requirements; the wood must still be treated using an approved ISPM 15 method. However, the designation affects how the material is intended to be used. A standard ISPM 15 mark indicates that a manufactured wood packaging unit meets all applicable ISPM 15 requirements as a complete item. By contrast, a “DUN” mark identifies an individual piece of treated wood intended for use as loose dunnage, rather than as part of a constructed packaging unit. [2]
Not all packaging material must be treated to qualify to be used as shipping or packaging material. Here is a list of materials which are not required to be treated and are exempt from ISPM 15 laws and regulations. [6]
Although this is only a reference, confirmation with the export authority when exporting to another country is required. This is a complete list as of July 1, 2010.
Countries and their approximate ISPM 15 Adoption Date: [7] [ needs update ]