Fumigation Certificates and ISPM 15 Explained

Wooden pallets, crates, and dunnage can carry insects that damage forests in other countries. To stop this, most countries follow an international standard — ISPM 15 — for wood packaging. Some commodities also need fumigation for their own pest risks. Getting this wrong can mean your shipment is held, treated, or sent back at your cost.

What Is ISPM 15?

ISPM 15 is an International Standard for Phytosanitary Measures, set under the International Plant Protection Convention. It applies to wood packaging material — pallets, crates, boxes, skids, and dunnage — used in international trade.

It requires that wood packaging be:

1. Treated using an approved method, and
2. Marked with the official ISPM 15 mark.

Approved Treatments

The main approved treatments include:

• Heat treatment (HT): heating the wood so its core reaches a specified temperature for a specified time
• Methyl bromide fumigation (MB): a chemical fumigation, increasingly restricted in many countries because of its environmental impact

Other methods have been added to the standard over time. Heat treatment is the most widely accepted.

The ISPM 15 Mark

Compliant wood packaging carries a stamp that includes:

• The IPPC symbol
• The country code (for example PK)
• A unique number identifying the producer or treatment provider
• The treatment code (for example HT or MB)

The mark must be legible and permanent, usually on at least two opposite sides.

What Is Exempt?

ISPM 15 generally does not apply to processed wood products such as plywood, particleboard, and oriented strand board, or to very thin wood. Plastic and metal pallets also avoid the requirement. Check the rules of the destination country, as some add their own requirements.

Fumigation Certificates for Commodities

Separately from packaging, some commodities are fumigated to control pests — for example grains, pulses, spices, dried fruit, and some agricultural products. Importing countries may require a fumigation certificate as evidence. The certificate records:

• The fumigant and dosage
• Duration and temperature
• The commodity and container details
• The treatment provider

Fumigation must be carried out by approved providers, and the certificate should match other shipping documents.

When Is a Fumigation Certificate Required?

It depends on the product and destination. Your buyer, the import permit conditions, or the letter of credit usually specify it. For plant products it is often linked with the phytosanitary certificate.

Consequences of Non-Compliance

Non-compliant wood packaging can lead to:

• Goods being held at the destination port
• Re-treatment, repacking, or destruction of the packaging at your cost
• The entire shipment being refused entry
• Storage and demurrage charges

Fumigation of Containers and Commodities in Practice

When a commodity must be fumigated, the process usually involves:

1. Booking an approved fumigation provider for your loading date
2. Loading goods into the container and sealing it for treatment
3. Applying the fumigant at the specified dosage, temperature, and exposure time
4. Ventilating the container before it is handled further
5. Issuing the fumigation certificate with container and seal numbers

Container numbers and seal numbers on the certificate must match the bill of lading and packing list. Fumigated containers may need warning labels, and receiving warehouses must ventilate them safely before unloading — tell your buyer when a container has been fumigated.

Best Practice

• Specify ISPM 15-compliant packaging in every order to your packaging supplier
• Check the mark before loading
• Consider plastic pallets or processed wood for regular shipments
• Keep treatment certificates with your shipping documents
• Confirm destination-specific rules with your forwarder

See our export packaging guide for more on protecting goods in transit.

Frequently Asked Questions

What does ISPM 15 mean?

ISPM 15 is an international standard requiring wood packaging material used in trade to be treated and marked to prevent the spread of pests.

Do plastic pallets need ISPM 15 treatment?

No. ISPM 15 applies to solid wood packaging. Plastic, metal, and processed wood products such as plywood are generally not covered.

Is a fumigation certificate the same as a phytosanitary certificate?

No. A fumigation certificate records a specific treatment. A phytosanitary certificate is an official statement about plant health issued by the plant protection authority, and may reference treatments.