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ISPM 15 affects all wood packaging material (pallets, crates, dunnages, 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".
Wood treated with this process is often used for cladding or siding, flooring, furniture and windows. For the control of pests that may be harbored in wood packaging material (i.e. crates and pallets), the ISPM 15 requires heat treatment of wood to 56 °C for 30 minutes to receive the HT stamp.
Heat treatment: The wood must be heated to achieve a minimum core temperature of 56 °C (133 °F) for at least 30 minutes. Pallets treated using this method bear the initials HT near the IPPC logo. Chemical fumigation: The wood must be fumigated with methyl bromide. Pallets treated using this method bear the initials MB near the
Currently, the International Plant Protection Convention (IPPC), an international regulatory agency, mandates its 134 signatory countries to comply with the ISPM 15, which requires all dunnage to be heat-treated or fumigated with pesticides and marked with an accredited seal. There are several instances in which foreign insects have come ashore ...
These IPPC markings on a wood pallet indicate KD: kiln-dried, HT: heat treated, and DB: debarked. Essentially all wood packaging material that is exported to an IPPC member state must have a stamp such as this. When green wood dries, free water from the cell lumina, held by the capillary forces only, is the first to go.
Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
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