Quality management is one of the most critical aspects of any contract manufacturing relationship. When outsourcing production, maintaining consistent product quality requires clear standards, regular inspections, and well-defined contractual obligations.
Setting Quality Standards
Before production begins, both parties must agree on measurable quality parameters:
- Technical specifications and tolerances
- Acceptable defect rates (AQL levels)
- Material standards and certifications
- Testing and inspection procedures
- Packaging and labeling requirements
Quality Inspection Stages
Pre-Production Inspection
Verifies raw materials, components, and production setup before manufacturing begins. Catches potential issues early before they affect the entire batch.
During Production (DUPRO)
Conducted when 20-80% of production is complete. Identifies and corrects defects while production is still ongoing.
Pre-Shipment Inspection (PSI)
Final quality check when production is 100% complete and packed. Uses AQL sampling to accept or reject the shipment.
Common Quality Standards
- ISO 9001: General quality management system
- ISO 22000 / HACCP: Food safety management
- GMP: Good manufacturing practices (pharma, food supplements)
- ISO 14001: Environmental management
For contract terms related to quality, see our Contract Preparation Guide and Advantages and Disadvantages of contract manufacturing.