# Heat Treatment of Packaging Wood

*Last updated: 2026-06-18*

> To prevent the cross-border spread of quarantine pests, the international phytosanitary standard ISPM 15 requires that wooden packaging material used in international trade undergoes regulated treatment – this is what heat treatment of packaging wood refers to.

To prevent the cross-border spread of quarantine pests, the international phytosanitary standard ISPM 15 requires that wooden packaging material used in international trade undergoes regulated treatment – this is what heat treatment of packaging wood refers to. Approved methods include heat treatment (HT: core temperature of 56 °C for a minimum of 30 minutes) and fumigation with methyl bromide or phosphine; treated wood must bear the IPPC mark showing the country code, producer number, and treatment method abbreviation. The standard applies to pallets, crates, dunnage, and other articles made from raw wood, while processed materials such as plywood and OSB are generally exempt. Freight forwarders and importers should verify destination-country requirements before shipment, as non-compliant packaging can be refused entry or ordered destroyed by customs and border authorities.

**Source:** [https://www.ippc.int/en/publications/640/](https://www.ippc.int/en/publications/640/)

## Quick Facts

| Property | Value |
|---|---|
| Term | Heat Treatment of Packaging Wood |
| Language | EN |
| Word count | 128 |
| Last updated | 2026-06-18 |
| Source | https://www.ippc.int/en/publications/640/ |

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