Graphene composition analysis report
Date：2025-09-17 10:05:34 Classification
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Compositional analysis is a technique that uses microscopic spectroscopy and laser femtosecond laser detection to analyze the composition of products or samples, providing qualitative and quantitative analysis of each component. The process and key points for obtaining a graphene composition analysis report are compiled from information from authoritative testing agencies:
I. Requirements for Selecting a Testing Agency
1. Qualifications
- Must select a laboratory with CMA (China Metrology Accreditation Service) or CNAS (China National Accreditation Service for Conformity Assessment) accreditation to ensure the legal validity of the report.
- Recommended Agencies (Partial):
- Shanghai Xunshi Metrology and Testing Technology Co., Ltd.
- Huaxin (Guangzhou) Testing Services Co., Ltd.
- Guorui Zhongan Group (focusing on export certification)
2. Professional Capabilities
- Verify that the agency has specialized graphene testing equipment (such as scanning electron microscopes, Raman spectrometers, etc.) and experience.
II. Testing Content and Standards
1. Core Analysis Items
| Category | Testing Items
| Structural Characteristics | Number of Layers, Lattice Structure, Defect Density (Raman Spectroscopy/TEM)
| Composition | Carbon Purity, Functional Group Analysis (XPS/Infrared Spectroscopy)
| Physical Properties | Specific Surface Area, Thickness (AFM), Conductivity (Four-Point Probe Method)
| Chemical Modification | Graphene Oxide Reduction Degree, Additive Content (e.g., Polymer Matrix)
2. Implementation Standards
- Domestic Standards:
- HG/T 5573-2019 "Graphene Zinc Powder Coatings"
- T/CPUMT 011-2023 "Graphene Waterborne Anticorrosion Coatings"
- International References:
- ISO/TS 21356-1:2021 "Specifications for Characterization of Nanomaterials"
III. Application Process and Timeline
1. Overview of Steps
A[Contact Organization] --> B [Confirm testing standards and items]
B --> C [Contract signing and payment]
C --> D [Sample delivery]
D --> E [Laboratory testing]
E --> F [Report review]
F --> G [Report acquisition]
2. Key Steps
- Sample delivery requirements:
- Powder samples must be ≥ 10g; film samples must be labeled with the base material.
- Mailed/on-site sampling is supported (on-site sampling fee is extra).
- Turnaround time and fees:
- Typical turnaround time: 3-7 days (additional negotiation required for urgent cases).
- Fee range: 600-2000 RMB, calculated based on the number of items (e.g., electron microscopy analysis, approximately 400 RMB per item).
IV. Report Application and Considerations
1. Core Application Scenarios
- Product Market Compliance (e.g., battery electrodes, anti-corrosion coatings)
- Export Certification (e.g., EU REACH, US FDA)
- Intellectual Property Protection (formulation patent evidence)
2. Risk Mitigation Recommendations
- Report Validity: Confirm the cover has the CMA red seal and testing agency number.
- Data Authenticity: Requires the original test spectrum (e.g., Raman characteristic peaks).
- Customized Requirements: If modified graphene is involved (e.g., polymer composites), the additive ratio test must be clearly specified.
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