IPPC Phytosanitary Standards (ISPMs)

The ISPM series spans the machinery of plant-health protection in international trade. In broad scope terms it includes standards on pest risk analysis; on the establishment and recognition of pest free areas, places of production, and areas of low pest prevalence; on surveillance and pest reporting; on the design and operation of export certification systems; on phytosanitary certificates; on regulated pests and their categorisation; on inspection, sampling, and consignment verification; on phytosanitary treatments; on the regulation of wood packaging material in trade; and on terminology.

Those subjects sort into two useful groups. Some ISPMs are conceptual frameworks — how to analyse pest risk, how to categorise a pest, what a pest free area means — which give countries a shared method for reaching defensible decisions. Others are operational — how certification systems should work, what a phytosanitary certificate is, how treatments are specified. The trade-facing consequence of the whole series is that a consignment’s admissibility on plant-health grounds is decided by processes the ISPMs standardise, even though the decision itself is always national.

The ISPMs do not regulate consignments. Contracting parties to the Convention undertake to establish a national plant protection organisation and to base their phytosanitary measures on international standards where they exist. It is that national organisation which sets import requirements, issues phytosanitary certificates for exports, inspects, and refuses entry. When a consignment is stopped, it is stopped under national law by a national authority — the ISPM in the background supplies the method and the vocabulary.

The SPS Agreement then does for plant health what it does for food safety. It names the IPPC as the relevant international standard-setting body, so measures conforming to an ISPM are presumed consistent with a member’s SPS obligations, while stricter measures may require scientific justification through pest risk analysis. This is the reason pest risk analysis carries such weight: it is the mechanism by which a country justifies a measure that goes beyond the international standard.

The ISPMs address plant health and nothing else. They are not concerned with food safety, which is Codex territory, nor with animal health, which belongs to WOAH. They say nothing about commercial quality or grade, about residues, about organic status, or about tariffs and origin. A consignment can be phytosanitarily impeccable and fail on any of those other grounds, and a phytosanitary certificate speaks only to the plant-health question it was issued about.

• Not food safety — Codex and national food law govern that
• Not animal health — the WOAH codes govern that
• Not quality or grade — grading standards and contracts govern that
• Not a licence to import — an import permit, where required, is separate
• Not self-executing — an ISPM regulates nothing until a country applies it

One further boundary is worth stating plainly. The IPPC Secretariat and the Commission on Phytosanitary Measures inspect no consignments, issue no certificates, and grant no pest free area status to anyone. Recognition of a pest free area, for example, is something an importing country extends to an exporting country’s claim, assessed against the method an ISPM describes — it is not a designation the IPPC hands out.