Pre-Shipment Inspection: The Complete Guide to PSI

What is pre-shipment inspection?

A pre-shipment inspection (PSI) is an on-site examination of finished goods conducted at the factory after production is complete but before the shipment is loaded for export. The inspection verifies that the products meet the buyer's specifications in terms of quantity, quality, labeling, packaging, and functionality.

The inspection is typically carried out when at least 80% of the order has been produced and export-packed. A trained quality control inspector draws a random sample from the finished lot, checks each unit against the approved reference sample and product specification sheet, and classifies any defects found as critical, major, or minor. The lot is then evaluated against an agreed Acceptable Quality Level (AQL) to determine whether it passes or fails.

PSI is the most widely used type of product inspection in international trade. It gives importers a factual, third-party assessment of what is actually sitting on the factory floor — before the goods are shipped and before it becomes far more expensive to resolve problems.

Why countries may require pre-shipment inspections?

Many importing countries — particularly in Africa, the Middle East, and parts of Asia — mandate PSI programs as a condition of customs clearance. These government-mandated programs serve several purposes:

• Revenue protection — The inspection verifies the declared value, quantity, and tariff classification of imported goods, helping governments collect the correct amount of customs duties and taxes.
• Consumer safety — PSI ensures that imported products comply with national safety, health, and environmental standards before they enter the domestic market.
• Trade fraud prevention — By inspecting goods at origin, countries can detect under-invoicing, mis-declaration of goods, and counterfeit products before they arrive at the border.
• Foreign exchange control — In nations with restricted foreign currency reserves, a PSI certificate confirms that the goods justify the outflow of hard currency.
• Capacity building — Countries with limited customs infrastructure rely on international inspection companies to supplement their verification capabilities.

The World Trade Organization (WTO) recognizes pre-shipment inspection under the Agreement on Pre-Shipment Inspection, which sets rules to ensure that PSI programs do not create unnecessary barriers to trade. Countries including Nigeria, Saudi Arabia, Kenya, Bangladesh, and Indonesia have all operated government-mandated PSI programs at various points.

What is the purpose of pre-shipment inspection?

Whether mandated by a government or requested voluntarily by a buyer, the core purpose of a pre-shipment inspection is to answer one critical question: Do these goods match what was ordered?

More specifically, PSI serves to:

1. Verify product quality — Confirm that the finished goods meet workmanship standards and match the approved reference sample in appearance, dimensions, color, and finish.
2. Confirm quantity and assortment — Count the packed cartons and verify that the correct styles, sizes, colors, and SKUs are present in the right quantities.
3. Check functionality — Perform on-site tests (electrical, mechanical, or operational) to verify that the product works as intended.
4. Validate packaging and labeling — Ensure shipping marks, barcodes, care labels, and regulatory markings are correct and the packaging protects the product during transit.
5. Reduce financial risk — Identifying defects before shipment avoids costly returns, chargebacks, rework at destination, and damage to buyer-retailer relationships.
6. Provide documentation — The inspection report serves as an objective, evidence-based record that can be shared with stakeholders, insurers, and customs authorities.

For buyers sourcing from overseas factories, PSI is the most cost-effective way to protect the investment before the goods are in transit. Catching a problem at the factory costs a fraction of what it costs to resolve after delivery.

What are the 7 steps for a pre-shipment inspection?

A professional PSI follows a structured, repeatable process. These seven steps reflect industry best practice and are consistent with the methodology used by our inspection services at AQM BD:

Step 1: Confirm production readiness

Before dispatching an inspector, verify that at least 80% of the order is finished and export-packed. Inspecting too early leads to incomplete findings. Request packing photos from the factory and confirm the on-site date.

Step 2: Prepare the inspection checklist

Define exactly what the inspector must check. The checklist should reference the purchase order, product specification sheet, approved sample, packaging requirements, labeling artwork, and the agreed Acceptable Quality Level for critical, major, and minor defects.

Step 3: Draw a random sample

Using the AQL sampling tables from ISO 2859-1, determine the sample size based on the lot size and inspection level (typically General Inspection Level II). The inspector pulls units at random from different cartons and different areas of the warehouse to ensure representativeness. Our AQL Calculator makes this step straightforward.

Step 4: Conduct a visual and dimensional check

Inspect each sampled unit for workmanship, appearance, color, dimensions, and weight. Compare against the reference sample and specification sheet. Record every defect found and classify it as critical, major, or minor.

Step 5: Perform functional and safety tests

Test the product in conditions that simulate real-world use. For electrical items, this includes power-on tests, hi-pot or ground continuity checks, and performance verification. For non-electrical products, check mechanical function, assembly, zippers, buttons, closures, or any moving parts.

Step 6: Verify packaging and labeling

Check the inner packaging, outer carton, shipping marks, barcodes (scan them), care labels, country-of-origin markings, and any regulatory labels. Confirm carton dimensions and gross weights against the packing list. Perform a carton drop test if specified.

Step 7: Issue the inspection report

Compile the findings into a detailed report with photographs, defect descriptions, test results, and a clear pass/fail/pending decision based on the AQL criteria. The report is delivered to the buyer, typically within 24 hours, so a shipping decision can be made promptly.

Frequently Asked Questions