How to read a certificate of analysis
Match a COA to the correct research material and lot, separate identity from purity and measured content, verify the source, and preserve the report’s limits.
Research Library
Practical guides for reading laboratory records, matching lots, and understanding what an analytical result can establish and what it cannot.
- Sources
- Shown with every guide
- Scope
- Limited to the stated method and record
- Use
- Laboratory research only
How to read a certificate of analysis
Match a COA to the correct research material and lot, separate identity from purity and measured content, verify the source, and preserve the report’s limits.
Read the starting guideBrowse by question
Start with the kind of record or decision in front of you.
Current guides
1 published guide
Permanent reference points
Use the live record or policy owner when an article is not the source of truth.