What is a COA (Certificate of Analysis)?

📄 What is a COA?

What is a COA (Certificate of Analysis)?

A COA, or Certificate of Analysis, is a laboratory-issued document that provides the results of quality testing and analysis performed on a product. It is used to verify that the product meets specified quality standards and testing requirements.

A COA is commonly used to confirm important information such as:

✅ Purity

✅ Content / Assay

✅ Identity

✅ Impurities and contamination levels

Why is a COA Important?

A COA helps buyers verify:

• Whether the product contains the stated compound

• Whether the purity level is within an acceptable range

• Whether the product has been tested by a laboratory

As a result, a COA provides greater transparency and confidence in product quality.

What Information is Included in a COA?

Common information found in a COA includes:

ItemDescriptionProduct NameProduct nameBatch / Lot No.Manufacturing batch numberAssayAmount of active compound detectedPurityPurity percentageAppearancePhysical appearance of the productTest MethodAnalytical testing method usedAnalysis DateDate of laboratory analysisResultTest results

What Purity Level is Considered Good?

In general, higher purity indicates fewer impurities.

• 95% or higher → Commonly accepted quality standard

• 98% or higher → Considered high purity

• 99% or higher → Considered very high purity

Summary

A COA (Certificate of Analysis) is a quality analysis document that provides important information about a product, including purity, assay results, and laboratory testing data. It serves as a valuable reference for buyers who wish to review product quality and batch-specific testing information before making a purchasing decision. 📋✨