Quality control is the backbone of successful sourcing from India. Without proper inspections, even the best suppliers can ship defective goods. This guide covers the inspection types, standards, and best practices you need in 2026.
Types of Quality Inspections
Pre-Production Inspection (PPI)
Timing: Before production begins
Verify raw materials, components, and production readiness
Key Checks:
- • Raw material quality
- • Component specifications
- • Factory capacity
- • Production schedule feasibility
Recommendation:
Always recommended for new suppliers or products
During Production Inspection (DPI)
Timing: When 20-30% of production is complete
Catch quality issues early to prevent batch-wide defects
Key Checks:
- • Workmanship quality
- • Specification compliance
- • Production process
- • Packing preparation
Recommendation:
Critical for large orders or complex products
Pre-Shipment Inspection (PSI)
Timing: When 80-100% of production is complete and packed
Final quality verification before shipment
Key Checks:
- • Finished product quality
- • Quantity verification
- • Packing and labeling
- • Shipping marks
Recommendation:
Essential for every shipment
Container Loading Supervision (CLS)
Timing: During container loading
Ensure proper loading and prevent shipping damage
Key Checks:
- • Container condition
- • Loading sequence
- • Quantity verification
- • Container sealing
Recommendation:
Important for fragile or high-value goods
Understanding AQL Standards
AQL (Acceptable Quality Level) is the international standard for statistical sampling during inspections. It defines the maximum acceptable defect rate for a batch to pass inspection.
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| AQL Level | Description | Max Defects | Use Case |
|---|---|---|---|
| AQL 0.65 | Very strict - for critical items | 0.65% max | Medical devices, safety equipment |
| AQL 1.0 | Strict - for high-quality requirements | 1.0% max | Electronics, precision items |
| AQL 1.5 | Standard - most common for consumer goods | 1.5% max | Apparel, home goods |
| AQL 2.5 | Normal - acceptable for most products | 2.5% max | General merchandise, promotional items |
| AQL 4.0 | Relaxed - for non-critical items | 4.0% max | Low-cost items, less visible defects acceptable |
Defect Classification
Critical Defects
Safety hazards or complete failure
Action: Reject entire lot
Examples: Sharp edges on toys, broken electrical safety
Major Defects
Reduces usability or sellability
Action: Apply strict AQL
Examples: Wrong color, missing components, significant damage
Minor Defects
Does not affect use but noticeable
Action: Apply relaxed AQL
Examples: Slight scratches, minor stitching issues, small marks
Best Practices for 2026
- Define inspection criteria BEFORE production starts
- Create detailed product specification sheets with photos
- Use random sampling—never let factory select samples
- Document everything with photographs and videos
- Include functional testing, not just visual inspection
- Check packaging and labeling compliance
- Verify quantity against packing lists
- Test products in conditions simulating actual use
Common Inspection Mistakes
- ✗ Skipping pre-production inspection to save money
- ✗ Letting the factory select which items to inspect
- ✗ Using visual-only inspection without functional testing
- ✗ Not defining defect criteria before production
- ✗ Inspecting too late when corrections are costly