A short moderator guide so your question gets answered quickly:
- Post in the right category (COA questions in COA, storage in Storage & Reconstitution, etc.).
- Say what you've already checked — the COA, the method block, your notebook.
- Link the COA or paper if you can; the analytical crowd loves a chromatogram.
- Keep it research/handling-framed. "How is concentration documented?" gets answers; anything about taking a compound is out of scope and gets redirected.
Do those and you'll usually have a solid reply within a day.