Introduction to the California 65 testing and certification cycle and process fo
Date：2025-08-07 14:07:37 Classification
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This article provides a detailed introduction to the cycle and process for testing and certification of watch straps under California Proposition 65, organized in conjunction with the core requirements and practical key points of California Proposition 65:
I. Testing and Certification Process
1. Confirming Testing Items and Limits
- Core Test Substances:
- Total Lead (≤90 ppm for coating materials, ≤100 ppm for other materials);
- Phthalates (DEHP/DBP/BBP, etc. ≤1000 ppm);
- Cadmium (≤300 ppm).
- Special Requirements: Watch straps containing flame retardants (such as TDCPP) require additional testing (≤25 ppm).
2. Selecting a Recognized Laboratory
- Only laboratories authorized by the CPSC or with internationally recognized certifications (such as ISO 17025) are accepted.
- Recommended Agency: Dezewei Testing.
3. Sample Submission and Documentation Preparation
- Sample Quantity: 2-3 finished watch straps (including all material types, such as leather, silicone, and metal buckles).
- Materials List:
- Product Materials List (BOM);
- Production Process Description;
- Description of Usage Scenario (whether skin contact).
4. Laboratory Testing
- Test Items:
- Chemical Analysis of Accessible Components (Lead, Cadmium, Phthalate, etc.);
- Migration Risk Assessment (for long-term skin contact).
- Report Content: Must clearly indicate compliance with California 65 limits.
5. Compliance Labels and Warning Labels
- If the test result exceeds the limit, an English warning label must be affixed to the product packaging (for example: "⚠️ WARNING: This product contains chemicals known to cause cancer.").
II. Turnaround Time and Cost
- Testing Turnaround Time:
- Regular: 5-7 business days;
- Expedited: 1-3 business days (cost increases by 30%-50%).
- Cost Range:
- Basic Testing (Lead + Phthalates): Approximately 1,000
III. Key Considerations
1. Qualifications to Avoid
- Confirm that the laboratory is CMA/CNAS or CPSC authorized; otherwise, the report will be invalid.
2. Sample Coverage
- Multi-color/multi-material watch straps require separate sampling to avoid missing high-risk components (such as dyed leather and metal buckles).
3. Regulatory Updates
- The California 65 list is updated annually and requires regular review (for example, the new bisphenol A limit was added in 2023).
4. Risk of Noncompliance
- Failure to attach warning labels may result in lawsuits and fines.
IV. Operational Recommendations
- Batch Optimization: Watch straps from the same series can be combined for testing to reduce costs.
- Long-Term Compliance: Retesting is required after material changes, and annual reports are recommended.
Tip: Watch straps containing recycled materials have a higher risk of exceeding phthalate limits. Therefore, it is recommended to conduct a self-inspection of the supply chain before submitting for testing.
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