The Pallet Express Heat Treatment
Due to the International Plant Protection Convention (abbreviated IPPC), all pallets shipped across national borders must be made of materials that are incapable of being a carrier of invasive species of insects and plant diseases. The standards for these pallets is specified in ISPM 15.
Pallets made of raw, untreated wood are not compliant with ISPM 15. To be compliant the pallets (or other wood packaging material) must meet debarked standards, and must be treated by either of the following means under the supervision of an approved agency:
Heat treatment The wood must be heated to achieve a minimum core temperature of 60°C (140°F) for at least 30 minutes. Pallets treated via this method bear the initials HT near the IPPC logo.