HPLC vs UV vs TLC for Botanical Extract Testing
Not every botanical extract needs the same test method. HPLC, UV, and TLC are all used in the industry, but buyers should understand what each method is suited for before comparing suppliers or interpreting a COA.
HPLC is usually the most specific option
HPLC is widely used when a buyer needs a quantified marker compound with stronger specificity. It is often preferred for standardized extracts with defined active components.
Because HPLC provides compound-level information, it is often easier to align with technical specifications and quality comparisons across suppliers.
UV can be practical for selected marker systems
UV methods can be effective for some ingredient classes when the marker system is appropriate and the method is validated for the intended use.
For buyers, the key is not to assume UV is always weaker, but to verify whether it matches the target specification and application requirement.
TLC is often used for identity or screening support
TLC can be useful for identity confirmation or general comparison, but it is usually not viewed the same way as a quantified HPLC assay when precise active marker control is required.
It is important to evaluate TLC in the context of the full specification, not as a standalone indicator of quality.
- HPLC: high specificity for quantified marker control
- UV: practical for selected marker systems
- TLC: identity or screening support
Frequently Asked Questions
Is HPLC always better than UV or TLC?
Not automatically. HPLC is often preferred for quantified marker control, but the right method depends on the ingredient, target specification, and intended use.
What should buyers ask when reviewing a COA?
Ask which method was used, which marker or property was measured, and whether that method aligns with the quality requirement of your formulation or market.