What Is a Pre-Shipment Inspection?
A Pre-Shipment Inspection (PSI), also known as a Final Random Inspection (FRI), is the most widely used quality control checkpoint in international trade. It is conducted when at least 80% of an order has been produced and export-packed, giving the inspector access to a statistically representative sample of finished goods in their final shipping condition.
The purpose is straightforward: to give the buyer an independent, fact-based assessment of whether the shipment meets the agreed quality standards, quantities, and packaging requirements before payment is released and goods are loaded for transport. A clear pass or fail result — backed by photographic evidence and data — allows buyers to make informed decisions about accepting, rejecting, or reworking a shipment while it is still at the factory.
When Should You Schedule a PSI?
The optimal timing is when production is 80–100% complete and at least 80% of goods are packed in their final export cartons. This ensures inspectors can pull random samples from finished stock, verify carton counts, and assess packaging quality alongside the product itself. Scheduling too early — when goods are still on the production line — reduces the inspection's reliability and may require a follow-up visit.
What Does a Pre-Shipment Inspection Cover?
- AQL-based random sampling — Samples are drawn according to ISO 2859-1 (ANSI/ASQ Z1.4) Acceptable Quality Level tables. The sample size and accept/reject thresholds are determined by the lot size and the AQL levels agreed between buyer and supplier (commonly 0/1.5/4.0 for critical/major/minor defects). Use our free AQL sample size calculator to see your exact sample size and accept/reject numbers. Prefer to run it yourself? Browse our free PSI inspection templates by product category.
- Visual and cosmetic inspection — Every sampled unit is examined for surface defects, colour matching, finish quality, and overall workmanship. Inspectors compare products against approved reference samples, technical drawings, or specification sheets.
- Dimensional and measurement checks — Key dimensions are measured with calibrated instruments (callipers, tape measures, gauges) and compared against specifications. For garments, this includes size measurements against the size chart.
- Functional and performance testing — Products are tested for intended function: does it switch on, open, close, fold, or assemble correctly? For electronics, this may include power-on tests, button functionality, and basic safety checks.
- Packaging and labelling verification — Inspectors verify inner packaging (poly bags, foam inserts, bubble wrap), outer carton strength (drop test, stacking), correct labelling (barcodes, UPC/EAN, country of origin, care labels), and shipping marks.
- Quantity verification and carton count — Total carton count is verified against the packing list. Cartons are weighed, and a sample of cartons is opened to verify piece count and assortment.
- On-site photography — Comprehensive photo documentation at every stage: factory exterior, production area, warehouse, product close-ups, defect examples, packaging, and labelling. Typically 50–150 photos per inspection.
Defect Classification
Defects found during inspection are classified into three categories, each with its own AQL tolerance level:
- Critical defects — Safety hazards or regulatory non-compliance (e.g. sharp edges on a toy, wrong voltage rating). AQL typically set at 0, meaning zero tolerance.
- Major defects — Functional failures or significant appearance issues likely to result in a customer return (e.g. product doesn't work, wrong colour, missing components). AQL commonly set at 1.5 or 2.5.
- Minor defects — Small cosmetic imperfections that most customers would accept (e.g. slight scratches in non-visible areas, minor colour variation). AQL commonly set at 4.0.
Inspection Report Delivery
A detailed PDF report is delivered within 24 hours of inspection completion, including a clear overall result (Pass, Fail, or Pending), full photo gallery, measurement data, defect log with photos, and a statistical summary. Rush 12-hour delivery is available on request from most providers.
Industries That Rely on Pre-Shipment Inspections
PSI is used across virtually every product category in international trade, including consumer electronics, garments and textiles, footwear, furniture, toys, kitchenware, automotive parts, building materials, and promotional goods. Any buyer purchasing manufactured goods from overseas suppliers should consider a PSI as standard practice.
Why Use InspectionService.com?
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Frequently Asked Questions
Most pre-shipment inspections run about $200–$500 per man-day, with general consumer goods typically $250–$350. One man-day is usually enough for a standard inspection, so that rate is often the full price. See our pre-shipment inspection cost guide for a full breakdown.
When production is 100% complete and at least 80% of the goods are packed in their final export cartons. That lets the inspector pull a representative random sample and verify packaging and carton counts — scheduling too early can require a repeat visit.
Yes. Pre-Shipment Inspection (PSI) and Final Random Inspection (FRI) are two names for the same check — a final AQL-based inspection of finished, packed goods before they ship.
Samples are drawn under ISO 2859-1 (ANSI/ASQ Z1.4). Common accept/reject levels are 0 for critical, 1.5 or 2.5 for major, and 4.0 for minor defects, but you can set them to match your product's risk. Our AQL tables guide explains how sample sizes are calculated.
A fail gives you evidence to act before you pay the balance or ship — you can reject the lot, ask the supplier to rework and re-inspect, or renegotiate. Catching a problem at the factory is far cheaper than handling defects after arrival.