Lab reports
Certificates of analysis by lot. Every kilogram we ship carries one, and this is where you can look one up — or request the current certificate before you order anything.
Three lots published
Certificates below are the complete, unaltered PDFs as issued by FESA Labs (Food & Environment Safety Analytical Lab, Santa Ana, California), signed by Marie True, M.S., Laboratory Manager. Download any of them without asking us for anything. If you need a certificate for a lot that is not listed here, email [email protected] with the lot code and we will send it the same day, along with our identity method parameters if your lab wants them.
3 lots in the public library
| Sample ID | Sample | Issued | 13-OH assay | THP | Certificate |
|---|---|---|---|---|---|
| 65460805-1 | 7/27 R5 - 6 | 7 Aug 2026 | 97.19% | Not detected | Download PDF |
| 65460716-1 | 7/15 13OH | 17 Jul 2026 | 95.83% | Not detected | Download PDF |
| 65460629-10 | 13OH | 8 Jul 2026 | 91.57% | Not detected | Download PDF |
| No lot matches that code. Email us and we will send it — same-day response. | |||||
91.57 → 95.83 → 97.19
Three consecutive lots, in the order they were produced. We publish the low one because a range you cannot evidence is worth nothing to you.
Parent alkaloid not detected
Tetrahydropalmatine is the cheaper, widely available compound this material is most likely to be cut with or mistaken for. It is absent from every lot above.
Whole documents, not excerpts
Each link is the certificate exactly as the laboratory issued it, both pages, including the method reference. Nothing is summarised away.
What a certificate from us contains
Lot code
Matching the code printed on your container, so the document and the material are unambiguously linked.
Identity
Confirmed by HPLC. 13-OH elutes at 18.8 minutes; the parent alkaloid THP at 15.0. The method.
Assay
Percentage active for that specific lot. Published lots run 91.57% to 97.19%. See the certificates.
Chromatogram
Available on request, so your technical team can see the separation rather than read a number.
Verify us independently — we would prefer it
Send material to any competent analytical lab. The separation from the parent alkaloid works under standard reverse-phase conditions, so this is not exotic analysis, and we will share our method parameters so your lab does not have to develop one. A supplier that discourages third-party testing is telling you something about itself. Our full quality programme.
Need a certificate today?
Tell us what you are evaluating and we will send a representative certificate of analysis for current material, plus our identity method parameters.