Assay method
- HPLC (980)
- UV-Vis spectrophotometry (227)
- GC (148)
- Gravimetric (63)
- Titration (24)
- Enzymatic assay (17)
- Clevenger (volatile oil) (17)
- ICP / ICP-MS (13)
- Kjeldahl (7)
- LC-MS (6)
- AOAC fibre method (4)
- Ion chromatography (2)
- NMR (1)
- DMAC (1)
Pharmacopoeias & standards
- Ph. Eur. (EP) (453)
- USP (375)
- Ayurvedic Pharmacopoeia of India (358)
- EMA herbal monograph (332)
- Chinese Pharmacopoeia (329)
- ESCOP monograph (163)
- WHO monograph (159)
- Indian Pharmacopoeia (141)
- EFSA opinion / novel food (125)
- Japanese Pharmacopoeia (111)
- JECFA specification (58)
- ISO standard (42)
- British Pharmacopoeia (32)
- Food Chemicals Codex (31)
- Korean Pharmacopoeia (23)
- US GRAS notice (20)
- American Herbal Pharmacopoeia (14)
Purity
- Purity ≥95% (319)
- Purity 90–94.9% (76)
- Purity 50–89% (185)
- Purity 20–49% (539)
- Purity 5–19% (764)
- Purity 1–4.9% (572)
- Purity <1% (270)