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Buyer GuideIntermediate18 min read

Quality Inspection Guide

How to ensure goods meet your standards before they leave Africa. Pre-shipment inspections, AQL sampling, defect classification, and working with inspection firms like SGS and Bureau Veritas.

Quality inspection in warehouse

Types of Quality Inspection

Pre-Production Inspection (PPI)

Verify raw materials, components, and production setup meet specifications

When: Before production startsBest for: First-time suppliers or custom orders

During Production Inspection (DPI)

Catch quality issues early before full batch is affected

When: 20-30% of production completeBest for: Large orders ($50K+) or complex products

Pre-Shipment Inspection (PSI)

Final quality check before goods are packed and shipped

When: 80-100% production completeBest for: Every order - this is the minimum standard

Container Loading Inspection (CLI)

Verify correct quantity, packaging integrity, and loading conditions

When: During container loadingBest for: Fragile goods, full container loads (FCL)

What is AQL (Acceptable Quality Level)?

AQL is a statistical sampling method (ISO 2859-1) that determines the maximum number of defective units considered acceptable in a batch. Instead of checking every unit, inspectors examine a random sample and accept or reject the batch based on the defect count.

AQL 0.65

Critical Defects

Safety hazards, regulatory non-compliance, completely unusable. Zero tolerance - reject entire shipment.

Examples: Wrong chemical composition, mold/contamination, electrical hazard

AQL 1.0

Critical Defects (Relaxed)

Used for non-safety-critical products where some tolerance exists.

Examples: Minor structural weakness in packaging

AQL 2.5

Major Defects

Product doesn't meet specifications but isn't dangerous. Industry standard for most consumer goods.

Examples: Wrong dimensions, color mismatch, missing labels, functional failure

AQL 4.0

Minor Defects

Cosmetic issues that don't affect usability. Acceptable for most markets.

Examples: Small scratches, slight color variation, minor packaging dents

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