How to Read Agarwood Appraisal Certificates: Institution, Items, and Conclusion

This guide explains how to interpret agarwood appraisal certificates: first check the institution's accreditation, then verify whether the test items cover key indicators, and finally understand the limitations of the conclusion. Master these three points to avoid being misled by invalid certificates.

1. Institution: Who issues the certificate determines its credibility

The first factor in an agarwood certificate is the issuing institution. There are three types on the market: national or provincial quality inspection institutes (such as NGTC, CQC), third-party commercial testing companies, and 'partner labs' submitted by merchants. The first two usually hold CMA/CNAS accreditation and follow relatively standard procedures; the latter carries the risk of 'customized reports.' It is advisable to prioritize certificates bearing CMA or CNAS marks and verify the certificate number on the institution's official website. If a certificate only shows a merchant's logo or cannot be queried, its reference value is limited. For more on institution directories and accreditation interpretation, see the 'Institution Accreditation' section of the Identification Pillar Page.

2. Items: Do the test items cover key agarwood indicators?

A valuable agarwood certificate should include at least: species identification (whether it belongs to the Aquilaria genus of Thymelaeaceae), oil content (or alcohol-soluble matter), density (sinking or not), and detection of artificial additives (such as resin, dyes, weighting agents). Some certificates also attach microscopic structure images or chromatograms. If a certificate only states 'agarwood' without specific data, or lacks species and additive testing, it is hard to use as a quality basis. Note that different institutions have varying criteria for 'sinking grade,' so cross-reference with the density grading table in the Agarwood Encyclopedia.

3. Conclusion: Understand the boundary between 'pass' and 'grade'

Certificate conclusions are usually 'conforms' or 'does not conform' to a standard, or give a qualitative conclusion of 'agarwood.' But note: most certificates only prove that 'the sample is agarwood' and do not assess grade, origin, or age. That is, a certificate cannot tell you whether it is Hui'an or Sin Chew, nor whether it is wild or cultivated. If a merchant claims 'certificate identifies kyara,' check whether the certificate includes specific testing for kyara characteristic compounds (such as 2-(2-phenylethyl)chromones). For specialized kyara identification, refer to the Kyara Pillar Page. In addition, the conclusion is only responsible for the submitted sample, not the entire batch.

4. Common Misconceptions and Checklist

Misconception 1: A certificate means real agarwood—certificates only cover the sample and can be forged. Misconception 2: Higher certificate grade is better—most certificates have no grade. Misconception 3: Foreign certificates are more authoritative—national standards vary greatly, so check specific items. Checklist: ① Does the institution have CMA/CNAS? ② Can the certificate number be queried online? ③ Do items include species, oil, additives? ④ Is the conclusion clearly 'Aquilaria genus' rather than vague? ⑤ Is the testing standard number attached? Master these, and you can independently judge the value of a certificate. For more on incense appraisal knowledge, browse the Chinese Incense Culture · Agarwood Appraisal topic.

(This is industry observation and popular-science summary, not investment advice. Buy agarwood through legal channels with traceable, testable sources.)